1.

Q 25 If (m? - 7m - 3) = 0, then determine the value of (m - m 1). Given m

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Answer:

MATHS

For what VALUE of 'm', the equation (3m+1)X

2

+2(m+1)x+m=0 have EQUAL root?

MEDIUM

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ANSWER

for equal roots D=b

2

−4ac=0

⇒[2(m+1)]

2

−4m(3m+1)=0

⇒m

2

+2m+1−3m

2

−m=0

⇒−2m

2

+m+1=0

⇒2m

2

−m−1=0⇒(m−1)(m+

2

1

)=0

⇒

m=1,

2

−1

solution

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