332354 + Interview Questions in Secondary School in Math

1.	√3x^2-2x+1/2 factorise quadratic equation
Answer» $\huge\star\underline{\mathcal\color{brown}{HELLO\:MATE}}\star$ $\color{brown}{HERE\:IS\:YR\:ANS}$ ✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶ $\underline\color{Green}{IMAG}$ *WHN* WE *TRY* TO *FIND* *THE* *VALUE* IT *GIVE* *IMAGINARY FACTOR* *SEE* *THE* *GIVEN* *ATTACHMENT* $\fbox\color{brown}{HOPE\:IT\:HELPS}$ ✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶ $\huge{\mathcal{THANKS}}$ . $☝️ABHI☝️$

1.

√3x^2-2x+1/2 factorise quadratic equation

Answer»

$\huge\star\underline{\mathcal\color{brown}{HELLO\:MATE}}\star$

$\color{brown}{HERE\:IS\:YR\:ANS}$

✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶

$\underline\color{Green}{IMAG}$

WHN WE TRY TO FIND THE VALUE IT GIVE IMAGINARY FACTOR

SEE THE GIVEN ATTACHMENT

$\fbox\color{brown}{HOPE\:IT\:HELPS}$

✶⊶⊷⊶⊷⊷⊶⊷ ❍⊷⊶⊷⊶⊷⊶⊷✶

$\huge{\mathcal{THANKS}}$

.

$☝️ABHI☝️$

Discussion

2.	2÷[5+6÷{4+6÷16-3}] solve this step to step
Answer» Answer: 3 Step-by-step explanation: 4+6-10 16-3-13 10/13 5+6-11 11/3-6 2/6-3

2.

2÷[5+6÷{4+6÷16-3}] solve this step to step

Answer»

Answer:

3

Step-by-step explanation:

4+6-10

16-3-13

10/13

5+6-11

11/3-6

2/6-3

Discussion

3.	3x+4y=-6 and 2x-y=6 by elimination
Answer» ANSWER: PLEASE ASK me if you don't UNDERSTAND

3.

3x+4y=-6 and 2x-y=6 by elimination

Answer»

ANSWER:

PLEASE ASK me if you don't UNDERSTAND

Discussion

4.	The area of the two circles is in 1: 2. If the two circles are folded intosquares, then what will be the ratio of their areas?
Answer» ANSWER: Step-by-step EXPLANATION: AREA ratio=1:2 area ratio=x:2x a1/a2=x:2x pier1^2/pier2^2=1:2 r1^2/r2^2=1/2 r1/r2=1/root2 perimeter of CIRCLE ratio =2pier1/2pier2 =r1/r2 which is 1:root2 perimeter square ratio is perimeter of circle ratio whuch is 1/root2

4.

The area of the two circles is in 1: 2. If the two circles are folded intosquares, then what will be the ratio of their areas?

Answer»

ANSWER:

Step-by-step EXPLANATION:

AREA ratio=1:2

area ratio=x:2x

a1/a2=x:2x

pie*r1^2/pie*r2^2=1:2

r1^2/r2^2=1/2

r1/r2=1/root2

perimeter of CIRCLE ratio

=2pie*r1/2pie*r2

=r1/r2 which is 1:root2

perimeter square ratio is perimeter of circle ratio

whuch is 1/root2

Discussion

5.	How to become rich ???The one who thinks just study can make you rich is fool !!!
Answer» HEY MATE! Follow your passion. Nothing other than passion can make you rich. Do a work in which you FEEL the most happy and can do with you full CONCENTRATION and heart HOPE IT HELPED ^_^

5.

How to become rich ???The one who thinks just study can make you rich is fool !!!

Answer»

HEY MATE!

Follow your passion.

Nothing other than passion can make you rich.

Do a work in which you FEEL the most happy and can do with you full CONCENTRATION and heart

HOPE IT HELPED ^_^

Discussion

6.	(4a-1)^2-8a+2. How to solve ??????
Answer» Answer: this will be solved by quadratic EQUATION!use formula mehod or step up METHOD or,splti middle term methid! is STILL not able to' do tell me thanks!

6.

(4a-1)^2-8a+2. How to solve ??????

Answer»

Answer:

this will be solved by quadratic EQUATION!use formula mehod or step up METHOD or,splti middle term methid!

is STILL not able to'

do tell me

thanks!

Discussion

7.	If SinA = a/b, show that (secA–tanA) = root over b+a/b–a
Answer» Answer: here perpendicular=a hypotenuse=b and BASE =√(b^2-a^2) now hopely U will GET desire VALUE

7.

If SinA = a/b, show that (secA–tanA) = root over b+a/b–a

Answer»

Answer:

here perpendicular=a

hypotenuse=b

and BASE =√(b^2-a^2)

now hopely U will GET desire VALUE

Discussion

8.	Ncert class 7th chapter1 integer objective type answers page
Answer» ANSWER: PLEASE TELL the QUESTION FIRST

8.

Ncert class 7th chapter1 integer objective type answers page

Answer»

ANSWER:

PLEASE TELL the QUESTION FIRST

Discussion

9.	If w is 10 percent less than x, and y is 30 peecent less than z, then wy is what percent less than xz?
Answer» ANSWER: wy=xz-(30x-10z+300)%

9.

If w is 10 percent less than x, and y is 30 peecent less than z, then wy is what percent less than xz?

Answer»

ANSWER:

wy=xz-(30x-10z+300)%

Discussion

10.	Determine weather the given quadratic equation has real roots 2x^2 +5√3+ 16=0
Answer» Answer: $2 {x}^{2} + 5 \sqrt{3} + 16 = 0 \\ d = {b}^{2} - 4ac \\ = 0 - 4(2)(5 \sqrt{3 } + 16) \\ = - (40 \sqrt{3 } + 128)$ since D is in negative the QE has no REAL ROOTS

10.

Determine weather the given quadratic equation has real roots 2x^2 +5√3+ 16=0

Answer»

Answer:

$2 {x}^{2} + 5 \sqrt{3} + 16 = 0 \\ d = {b}^{2} - 4ac \\ = 0 - 4(2)(5 \sqrt{3 } + 16) \\ = - (40 \sqrt{3 } + 128)$

since D is in negative the QE has no REAL ROOTS

Discussion

11.	If p(x) 2x^2 - 5 x + 2 then p( 2) is equal topls help
Answer» <P>Answer: p(2)=0 Step-by-step explanation: p(X)=2x^2-5x+2 p(2)=2(2)^2-5(2)+2 p(2)= 2(4)-5(2)+2 p(2)=8-10+2 p(2)=-2+2 p(2)=0 hope this HELPED u....

11.

If p(x) 2x^2 - 5 x + 2 then p( 2) is equal topls help

Answer»

<P>Answer:

p(2)=0

Step-by-step explanation:

p(X)=2x^2-5x+2

p(2)=2(2)^2-5(2)+2

p(2)= 2(4)-5(2)+2

p(2)=8-10+2

p(2)=-2+2

p(2)=0

hope this HELPED u....

Discussion

12.	Multiplicative inverse of minus 2 by 5
Answer» Answer: MULTIPLICATIVE INVERSE of minus 2 by 5 is -10

12.

Multiplicative inverse of minus 2 by 5

Answer»

Answer: MULTIPLICATIVE INVERSE of minus 2 by 5 is -10

Discussion

13.	Lim x tend to pi/4 (sin x-cos x)/x-pi/4
Answer» Step-by-step EXPLANATION: HOPE it helps mark as BRAINLIEST

13.

Lim x tend to pi/4 (sin x-cos x)/x-pi/4

Answer»

Step-by-step EXPLANATION:

HOPE it helps

mark as BRAINLIEST

Discussion

14.	a man started his job with a certain monthly salary and want a fixed increment every year his salary was 15000 after 5 years service and 19000 after 10 year service what was his starting salary and his annual increment
Answer» ANSWER: He will GET ₹23000 after 10 YEARS

14.

a man started his job with a certain monthly salary and want a fixed increment every year his salary was 15000 after 5 years service and 19000 after 10 year service what was his starting salary and his annual increment

Answer»

ANSWER:

He will GET ₹23000 after 10 YEARS

Discussion

15.	The points (1,1) , (2,-2) , (4,-5) , (-3,4) lie in which quadrant
Answer» Answer: 1,1 lies in first quadrant 2,-2 lies in 4 quadrant 4,-5 lies in FOURTH quadrant -3,4 lies in second quadrant

15.

The points (1,1) , (2,-2) , (4,-5) , (-3,4) lie in which quadrant

Answer»

Answer:

1,1 lies in first quadrant

2,-2 lies in 4 quadrant

4,-5 lies in FOURTH quadrant

-3,4 lies in second quadrant

Discussion

16.	1lakh = how many hundred thousand
Answer» Answer: 10 Step-by-step EXPLANATION: THANKS!

16.

1lakh = how many hundred thousand

Answer»

Answer:

10

Step-by-step EXPLANATION:

THANKS!

Discussion

17.	Hcf of 1860 and 2015 by division method
Answer» *HEY* *mate* *here* is *your* *answer.... HOPE* it *HELP* *you.... So,* *Plzz* *mark* my *ans* as *BRAINLIEST* *answer*....

17.

Hcf of 1860 and 2015 by division method

Answer»

HEY mate here is your answer....

HOPE it HELP you.... So, Plzz mark my ans as BRAINLIEST answer....

Discussion

18.	Prove that the vector area of triangle whose vertices are a b c
Answer» Question⇒ PROVE that the VECTOR AREA of TRIANGLE whose vertices are a B c. Step-by-step explanation:

18.

Prove that the vector area of triangle whose vertices are a b c

Answer»

Question⇒ PROVE that the VECTOR AREA of TRIANGLE whose vertices are a B c.

Step-by-step explanation:

Discussion

19.	A = 5-2√6 then find the value of √a= 1/√a
Answer» Answer:15 Step-by-step EXPLANATION:

19.

A = 5-2√6 then find the value of √a= 1/√a

Answer»

Answer:15

Step-by-step EXPLANATION:

Discussion

20.	In a library,1/5are maths books, 1/8 are hindi books,1/12are Hindi books and the rest are evs books. If the number of evs books are 142, find the total number of books in library.
Answer» Step-by-step explanation: 1/5+1/8+1/12=24+15+10/120=49/120 1-49/120=120-49/120=71/120 71----------142 120--------? 120×142/71=2×120=240

20.

In a library,1/5are maths books, 1/8 are hindi books,1/12are Hindi books and the rest are evs books. If the number of evs books are 142, find the total number of books in library.

Answer»

Step-by-step explanation:

1/5+1/8+1/12=24+15+10/120=49/120

1-49/120=120-49/120=71/120

71----------142

120--------?

120×142/71=2×120=240

Discussion

21.	Prove that the any positive integer and prove that n cube minus and
Answer» Question⇒ For any positive integer n, prove that n3-n is divisible by 6. Step-by-step explanation: The Sage n³ - n = n(n²-1) = n(n -1)(n + 1) is divided by 3 then POSSIBLE REMINDER is 0, 1 and 2 [ ∵ if P = ab + r , then 0 ≤ r < a by EUCLID lemma ] ∴ Let n = 3r , 3r +1 , 3r + 2 , where r is an integer Case 1 :- when n = 3r Then, n³ - n is divisible by 3 [∵n³ - n = n(n-1)(n+1) = 3r(3r-1)(3r+1) , clearly SHOWN it is divisible by 3 ] Case2 :- when n = 3r + 1 e.g., n - 1 = 3r +1 - 1 = 3r Then, n³ - n = (3r + 1)(3r)(3r + 2) , it is divisible by 3 Case 3:- when n = 3r - 1 e.g., n + 1 = 3r - 1 + 1 = 3r Then, n³ - n = (3r -1)(3r -2)(3r) , it is divisible by 3 From above explanation we observed n³ - n is divisible by 3 , where n is any positive integers

21.

Prove that the any positive integer and prove that n cube minus and

Answer»

Question⇒ For any positive integer n, prove that n3-n is divisible by 6.

Step-by-step explanation:

The Sage
n³ - n = n(n²-1) = n(n -1)(n + 1) is divided by 3 then POSSIBLE REMINDER is 0, 1 and 2 [ ∵ if P = ab + r , then 0 ≤ r < a by EUCLID lemma ]
∴ Let n = 3r , 3r +1 , 3r + 2 , where r is an integer
Case 1 :- when n = 3r
Then, n³ - n is divisible by 3 [∵n³ - n = n(n-1)(n+1) = 3r(3r-1)(3r+1) , clearly SHOWN it is divisible by 3 ]
Case2 :- when n = 3r + 1
e.g., n - 1 = 3r +1 - 1 = 3r
Then, n³ - n = (3r + 1)(3r)(3r + 2) , it is divisible by 3
Case 3:- when n = 3r - 1
e.g., n + 1 = 3r - 1 + 1 = 3r
Then, n³ - n = (3r -1)(3r -2)(3r) , it is divisible by 3
From above explanation we observed n³ - n is divisible by 3 , where n is any positive integers

Discussion

22.	Product of ramu's age 5 years ago with his age 9 years later is 15 find dramas age
Answer» Step-by-step EXPLANATION: LET PRESENT age of Ramu be x age of Ramu 5 years ago=x-5 age of Ramu 9 years later=x+9 ATQ, (x-5)(x+9)=15 x²+9x-5x-45=15 x²+4x-45-15=0 x²+4x-60=0 x²+10x-6x-60=0 x(x+10)-6(x+10)=0 (x-6)(x+10)=0 x=6 x=-10, rejected as x is age and age cannot be negative therefore present age of Ramu=6 years

22.

Product of ramu's age 5 years ago with his age 9 years later is 15 find dramas age

Answer»

Step-by-step EXPLANATION:

LET PRESENT age of Ramu be x

age of Ramu 5 years ago=x-5

age of Ramu 9 years later=x+9

ATQ,

(x-5)(x+9)=15

x²+9x-5x-45=15

x²+4x-45-15=0

x²+4x-60=0

x²+10x-6x-60=0

x(x+10)-6(x+10)=0

(x-6)(x+10)=0

x=6

x=-10, rejected as x is age and age cannot be negative

therefore

present age of Ramu=6 years

Discussion

23.	Product of three consecutive number is 3360 what is the least number
Answer» ANSWER: Step-by-step EXPLANATION: I don't KNOW the answer

23.

Product of three consecutive number is 3360 what is the least number

Answer»

ANSWER:

Step-by-step EXPLANATION:

I don't KNOW the answer

Discussion

24.	(_7)+(_6)÷2_((_5)×(_4)_(3_5))
Answer» (-7) + (-6) ÷ 2 - {(-5) × (-4) - ( 3-5 ) } = -7 -3 - { 20 +2 } = - 10 - 22 = - 32

24.

(_7)+(_6)÷2_((_5)×(_4)_(3_5))

Answer»

(-7) + (-6) ÷ 2 - {(-5) × (-4) - ( 3-5 ) }

= -7 -3 - { 20 +2 }

= - 10 - 22

= - 32

Discussion

25.	If 7+4root3 find the value of x square - 1/x square
Answer» ANSWER: x=7+4√3 =1/x=7-4/√3 =(7+4√3)²+(7-4√3)² =49+48+49+48+56√3-56√3 =194 Step-by-step explanation: 56√3-56√3 +and - SIGN 56√3-56√3 CANCEL out.

25.

If 7+4root3 find the value of x square - 1/x square

Answer»

ANSWER:

x=7+4√3

=1/x=7-4/√3

=(7+4√3)²+(7-4√3)²

=49+48+49+48+56√3-56√3

=194

Step-by-step explanation:

56√3-56√3

+and - SIGN

56√3-56√3 CANCEL out.

Discussion

26.	Simplify the following by rationalism the denominator 6-4√3upon 6-4√3
Answer» ANSWER: 1 is the answer. ...............

26.

Simplify the following by rationalism the denominator 6-4√3upon 6-4√3

Answer»

ANSWER:

1 is the answer. ...............

Discussion

27.	(x-6)(x-9)find the product using suitable properties
Answer» Step-by-step explanation: HOPE IT HELPS!! PLS MARK AS BRAINLIEST

27.

(x-6)(x-9)find the product using suitable properties

Answer»

Step-by-step explanation:

HOPE IT HELPS!!

PLS MARK AS BRAINLIEST

Discussion

28.	O la(V The angles or a thangle are mn. In the adjoining figure, ZA = 80°. BOand CO are bisectors of ZABC andLACB. Find the measure of ZBOC.
Answer» ANSWER: HOPE this is your SOLUTION

28.

O la(V The angles or a thangle are mn. In the adjoining figure, ZA = 80°. BOand CO are bisectors of ZABC andLACB. Find the measure of ZBOC.

Answer»

ANSWER:

HOPE this is your SOLUTION

Discussion

29.	Using euclid division algorithm find the H.C.F of 9367 3451
Answer» The HCF of 9367 and 3451 is 493. Step-by-step explanation: To find : The HCF of 9367 and 3451 ? SOLUTION : ACCORDING to Euclid ALGORITHM, $\text{Dividend}=\text{Quotient}\times \text{Divisor}+\text{Remainder}$ Divide 9367 by 3451 and start simplifying, $9367= 2\times 3451+ 2465\\\\3451 = 1\times 2465+ 986\\\\2465= 2\times 986+493\\\\986= 2\times 493+ 0$ The HCF of 9367 and 3451 is 493. #Learn more Find the hcf(121,573)by Euclid's algorithm brainly.in/question/3392856

29.

Using euclid division algorithm find the H.C.F of 9367 3451

Answer»

The HCF of 9367 and 3451 is 493.

Step-by-step explanation:

To find : The HCF of 9367 and 3451 ?

SOLUTION :

ACCORDING to Euclid ALGORITHM,

$\text{Dividend}=\text{Quotient}\times \text{Divisor}+\text{Remainder}$

Divide 9367 by 3451 and start simplifying,

$9367= 2\times 3451+ 2465\\\\3451 = 1\times 2465+ 986\\\\2465= 2\times 986+493\\\\986= 2\times 493+ 0$

The HCF of 9367 and 3451 is 493.

#Learn more

Find the hcf(121,573)by Euclid's algorithm

brainly.in/question/3392856

Discussion

30.	Q. 2. In Indian System of Numeration, the number58695376 is written as :(a) 58, 69,53,76 (b) 58,695,376(c) 5,86,95,376(d) 586,95,3761
Answer» ANSWER: c. 5,86,95,376 Step-by-step EXPLANATION: in INDIAN system the commas are ADDED from the last to further in order

30.

Q. 2. In Indian System of Numeration, the number58695376 is written as :(a) 58, 69,53,76 (b) 58,695,376(c) 5,86,95,376(d) 586,95,3761

Answer»

ANSWER:

c. 5,86,95,376

Step-by-step EXPLANATION:

in INDIAN system the commas are ADDED from the last to further in order

Discussion

31.	Verify that (i) 1 and 2 are the zeros of the polynomial P(X) equal to x square - 3 x + 2
Answer» HEY MATE! HERE IS YOUR ANSWER:

31.

Verify that (i) 1 and 2 are the zeros of the polynomial P(X) equal to x square - 3 x + 2

Answer»

HEY MATE!

HERE IS YOUR ANSWER:

Discussion

32.	The probability that a leap year has 53 Fridays or 53 Saturdays is
Answer» YAAA !! but she/he is ASKING for only FEBRUARY only

32.

The probability that a leap year has 53 Fridays or 53 Saturdays is

Answer»

YAAA !!

but she/he is ASKING for only FEBRUARY only

Discussion

33.	A car travels a distance of 550 kilometre in 5 hours what distance will the car travel in 7 hours
Answer» Answer: 770km Step-by-step EXPLANATION: If a car travels a distance of 550km in 5 HOURS then in 1 hour it travels.... 550/5 = 110 km it travels 110 km in an hour then in 7 hours..... 1 hour ------> 110km 7 hours ------> ? = (7 × 110 ) ÷ 1 = 7 × 110 = 770 km

33.

A car travels a distance of 550 kilometre in 5 hours what distance will the car travel in 7 hours

Answer»

Answer:

770km

Step-by-step EXPLANATION:

If a car travels a distance of 550km in 5 HOURS

then in 1 hour it travels....

550/5 = 110 km

it travels 110 km in an hour

then in 7 hours.....

1 hour ------> 110km

7 hours ------> ?

= (7 × 110 ) ÷ 1

= 7 × 110 = 770 km

Discussion

34.	Draw the graph of the following equations (i)y = 3x + 2 (ii)y=x
Answer» Answer: Your answer is here Step-by-step explanation: graph 1 -> y= 3X + 2 graph 2 -> y = x

34.

Draw the graph of the following equations (i)y = 3x + 2 (ii)y=x

Answer»

Answer:

Your answer is here

Step-by-step explanation:

graph 1 -> y= 3X + 2

graph 2 -> y = x

Discussion

35.	4. Expansions31. If a + 1 = 2; find :32. If a - * = 3; find a? + 3a +-33. If a + b = 4 and ab = 3; find
Answer» ANSWER:Hejeu Step-by-step EXPLANATION:

35.

4. Expansions31. If a + 1 = 2; find :32. If a - * = 3; find a? + 3a +-33. If a + b = 4 and ab = 3; find

Answer»

ANSWER:Hejeu

Step-by-step EXPLANATION:

Discussion

36.	✓√2-1/✓2+1 answer my question as much faster you can
Answer» We have to find the value of $\sqrt{\dfrac{\sqrt2-1}{\sqrt2+1}}.$ First, let's rationalize the denominator. For this, we can multiply $\sqrt2-1$ to both sides. $\sqrt{\dfrac{\sqrt2-1}{\sqrt2+1}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)(\sqrt2-1)}{(\sqrt2+1)(\sqrt2-1)}}$ Here the numerator becomes a square and the denominator gets simplified according to $(a-b)(a+b)=a^2-b^2.$ $\sqrt{\dfrac{(\sqrt2-1)(\sqrt2-1)}{(\sqrt2+1)(\sqrt2-1)}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{(\sqrt2)^2-(1)^2}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{2-1}}\ \Longrightarrow\ \\ \\ \\ \\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{1}}\ \Longrightarrow\ \sqrt{(\sqrt2-1)^2}$ Now we can take the square root of it. But before, we should have a think. On taking the square root of a number, we can GET two corresponding values with sign difference, as an example, the square root of 4 is 2 as well as -2. But if the square root of a number has to be found by indicating that number under the SYMBOL "√", we can only take the "positive" square root of that number. Because the symbol "√" means "positive square root", not "square root" only. To get both square roots, both positive and negative, we may INDICATE the number under "±√". Here it is $\sqrt{(\sqrt2-1)^2},$ so we have to get the positive square root. On FINDING $\pm\sqrt{(\sqrt2-1)^2},$ we get $\sqrt2-1$ and $-(\sqrt2-1)=1-\sqrt2.$ Now we have to find which is positive among these. For this, we consider 2 > 1. $2>1\ \Longrightarrow\ \sqrt2\ >\sqrt1\ \Longrightarrow\ \sqrt2\ >1\ \Longrightarrow\ \sqrt2-1>0$ So $\sqrt2-1$ is positive, hence $\sqrt2-1$ is the answer.

36.

✓√2-1/✓2+1 answer my question as much faster you can

Answer»

We have to find the value of $\sqrt{\dfrac{\sqrt2-1}{\sqrt2+1}}.$

First, let's rationalize the denominator.

For this, we can multiply $\sqrt2-1$ to both sides.

$\sqrt{\dfrac{\sqrt2-1}{\sqrt2+1}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)(\sqrt2-1)}{(\sqrt2+1)(\sqrt2-1)}}$

Here the numerator becomes a square and the denominator gets simplified according to $(a-b)(a+b)=a^2-b^2.$

$\sqrt{\dfrac{(\sqrt2-1)(\sqrt2-1)}{(\sqrt2+1)(\sqrt2-1)}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{(\sqrt2)^2-(1)^2}}\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{2-1}}\ \Longrightarrow\ \\ \\ \\ \\ \Longrightarrow\ \sqrt{\dfrac{(\sqrt2-1)^2}{1}}\ \Longrightarrow\ \sqrt{(\sqrt2-1)^2}$

Now we can take the square root of it. But before, we should have a think.

On taking the square root of a number, we can GET two corresponding values with sign difference, as an example, the square root of 4 is 2 as well as -2.

But if the square root of a number has to be found by indicating that number under the SYMBOL "√", we can only take the "positive" square root of that number.

Because the symbol "√" means "positive square root", not "square root" only.

To get both square roots, both positive and negative, we may INDICATE the number under "±√".

Here it is $\sqrt{(\sqrt2-1)^2},$ so we have to get the positive square root.

On FINDING $\pm\sqrt{(\sqrt2-1)^2},$ we get $\sqrt2-1$ and $-(\sqrt2-1)=1-\sqrt2.$

Now we have to find which is positive among these.

For this, we consider 2 > 1.

$2>1\ \Longrightarrow\ \sqrt2\ >\sqrt1\ \Longrightarrow\ \sqrt2\ >1\ \Longrightarrow\ \sqrt2-1>0$

So $\sqrt2-1$ is positive, hence $\sqrt2-1$ is the answer.

Discussion

37.	F(X)=X(x-2)/x-1 at X=2 examine continuty
Answer» ANSWER: HOPE you GOT it...................

37.

F(X)=X(x-2)/x-1 at X=2 examine continuty

Answer»

ANSWER:

HOPE you GOT it...................

Discussion

38.	If x=3, y =4 and z=-7, then x^3+y^3+z^3 - 3xyz is equal to(A) 6(B) O(C) 2(D) 8
Answer» Step-by-step EXPLANATION: I THINK U KNOW the identity mark as BRAINLIEST

38.

If x=3, y =4 and z=-7, then x^3+y^3+z^3 - 3xyz is equal to(A) 6(B) O(C) 2(D) 8

Answer»

Step-by-step EXPLANATION:

I THINK U KNOW the identity

mark as BRAINLIEST

Discussion

39.	the sum of three consecutive terms of an ap is 21 and the sum of the squares of these terms is 165. Find the terms.
Answer» *Question : The sum of three CONSECUTIVE TERMS of an ap is 21 and the sum of the SQUARES of these terms is 165. Find the terms* Step-by-step explanation: Let 1st consecutive term = a-d Let 1st consecutive term = a-dLet 2nd consecutive term = a Let 1st consecutive term = a-dLet 2nd consecutive term = aLet 3rd consecutive term = a+d Here , you can conclude that d is the common difference so , *ACCORDING To problem:* a-d + a+ a-d =21 3a= 21 a=7 *Now let's square them all :* (a-d)²+a²+(a+d)²=165 a²-2ad+d²+a²+a²+2ad+d²=165 3a²+2d²=165 147+2d²=165 2d²=18 d²=9 d=3 *Now put the values :* a - d = 7 - 3 a-d = 4 a + d = 7 + 3 a+d = 10 *Hence , The terms are 4,7,10*

39.

the sum of three consecutive terms of an ap is 21 and the sum of the squares of these terms is 165. Find the terms.

Answer»

Question : The sum of three CONSECUTIVE TERMS of an ap is 21 and the sum of the SQUARES of these terms is 165. Find the terms

Step-by-step explanation:

Let 1st consecutive term = a-d

Let 1st consecutive term = a-dLet 2nd consecutive term = a

Let 1st consecutive term = a-dLet 2nd consecutive term = aLet 3rd consecutive term = a+d

Here , you can conclude that d is the common difference

so ,

ACCORDING To problem:

a-d + a+ a-d =21

3a= 21

a=7

Now let's square them all :

(a-d)²+a²+(a+d)²=165

a²-2ad+d²+a²+a²+2ad+d²=165

3a²+2d²=165

147+2d²=165

2d²=18

d²=9

d=3

Now put the values :

a - d = 7 - 3

a-d = 4

a + d = 7 + 3

a+d = 10

Hence , The terms are 4,7,10

Discussion

40.	(-64)÷8×(-2)+(-4)×(4)plz fast ugent
Answer» ANSWER: =-8*-2+(-16) =16-16 =0

40.

(-64)÷8×(-2)+(-4)×(4)plz fast ugent

Answer»

ANSWER:

=-8*-2+(-16)

=16-16

=0

Discussion

41.	- RAJDHANIPAGE:DATE:os Beace that--30
Answer» ANSWER: BHAI yeh QUESTION proper nahi H

41.

- RAJDHANIPAGE:DATE:os Beace that--30

Answer»

ANSWER:

BHAI yeh QUESTION proper nahi H

Discussion

42.	Perimeter of the rhombus is 100 m and it’s diagonal is 40 m. Find the area of rhombus?
Answer» Step-by-step explanation: PERIMETER of RHOMBUS= 100M 4a=100m a=100/4 a=25 AREA of rhombus=half the PRODUCT of its diagonals =1/2(25x40) =500 Hence, area of rhombus is 500m

42.

Perimeter of the rhombus is 100 m and it’s diagonal is 40 m. Find the area of rhombus?

Answer»

Step-by-step explanation:

PERIMETER of RHOMBUS= 100M

4a=100m

a=100/4

a=25

AREA of rhombus=half the PRODUCT of its diagonals

=1/2(25x40)

=500

Hence, area of rhombus is 500m

Discussion

43.	Simplify (root11-root7)(root11+root7)
Answer» ANSWER: USE FORMULA of (a+b)(a-b) =(a^2-b^2) here a =√11=>a^2=11 and b=√7=>b^2=7 so (a^2-b^2)=11-7=4 answer

43.

Simplify (root11-root7)(root11+root7)

Answer»

ANSWER:

USE FORMULA of (a+b)(a-b)

=(a^2-b^2)

here a =√11=>a^2=11

and b=√7=>b^2=7

so (a^2-b^2)=11-7=4 answer

Discussion

44.	12÷[5+6÷{4+6÷16-3}] solve this
Answer» Answer: 12÷(5+6÷(11/3)) 1.2815533981

44.

12÷[5+6÷{4+6÷16-3}] solve this

Answer»

Answer:

12÷(5+6÷(11/3))

1.2815533981

Discussion

45.	4. All numbers having thedigit zero areexactly divisible by 10.5 78 is divisible by prime numbersLCM of two co-prime numbers is theirN. HCF of 34 and 51 is3. A multiple of a number is exactlyby that number.The smallest composite number isThe LCM of 8, 15, 20, 24, 30 is1 and theitself are always the factoevery number
Answer» Step-by-step EXPLANATION: ANS1- yes Ans2-34*51/78 Ans3-15 Ans4-1

45.

4. All numbers having thedigit zero areexactly divisible by 10.5 78 is divisible by prime numbersLCM of two co-prime numbers is theirN. HCF of 34 and 51 is3. A multiple of a number is exactlyby that number.The smallest composite number isThe LCM of 8, 15, 20, 24, 30 is1 and theitself are always the factoevery number

Answer»

Step-by-step EXPLANATION:

ANS1- yes

Ans2-34*51/78

Ans3-15

Ans4-1

Discussion

46.	Q. 1. The largest 4-digits number, using any onedigit twice, from digits 5,9,2 and 6 is :(a) 9652(b) 9562(c) 9659(d) 99651
Answer» 9965 Follow Me and PLEASE MARK as BRAINLIEST ANSWER.

46.

Q. 1. The largest 4-digits number, using any onedigit twice, from digits 5,9,2 and 6 is :(a) 9652(b) 9562(c) 9659(d) 99651

Answer»

9965

Follow Me and PLEASE MARK as BRAINLIEST ANSWER.

Discussion

47.	locate the points P(2,4),Q(7,4),R(7,6),S(2,6) on the graph paper and after joining them. name the figure so formed
Answer» ANSWER: MARK me as brainliest Step-by-step explanation: the figure formed is RECTANGLE

47.

locate the points P(2,4),Q(7,4),R(7,6),S(2,6) on the graph paper and after joining them. name the figure so formed

Answer»

ANSWER:

MARK me as brainliest

Step-by-step explanation:

the figure formed is RECTANGLE

Discussion

48.	Round the number 76,23,892 to the nearest ten,hundreds and lakh
Answer» ANSWER: NEAREST ten=7623890 nearest hundred=7623900 and nearest lakh=7600000

48.

Round the number 76,23,892 to the nearest ten,hundreds and lakh

Answer»

ANSWER:

NEAREST ten=7623890

nearest hundred=7623900 and

nearest lakh=7600000

Discussion

49.	Simplify 2(7+2✓5)/29
Answer» Step-by-step explanation: PLEASE FOLLOW me i will solve your all MATHS PROBLEMS

49.

Simplify 2(7+2✓5)/29

Answer»

Step-by-step explanation:

PLEASE FOLLOW me i will solve your all MATHS PROBLEMS

Discussion

50.	Lenght of the plant in 12 days in cm ?
Answer» 1CM i THINK so FOLLOW me

Discussion

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