Factorise x3-3x2-9x+5

1.	Factorise x3-3x2-9x+5
Answer» Step-by-step explanation: X(x^2-3x-9)+5 (X+5)(x^2-3x-9) Now SOLVING (x^2-3x-9) by SHRIDHAR ACHARYA method D = 9 - 4.1.-9 D= 9+36 D= 45 Now, $x = 3 + - \sqrt{45 } \div 2$ X=3+root45/2 or 3-root45/2 Thus FACTORS are = 5, 3+root45/2, 3-root45/2

Answer»

Step-by-step explanation:

X(x^2-3x-9)+5

(X+5)(x^2-3x-9)

Now

SOLVING (x^2-3x-9) by SHRIDHAR ACHARYA method

D = 9 - 4.1.-9

D= 9+36

D= 45

Now,

$x = 3 + - \sqrt{45 } \div 2$

X=3+root45/2 or 3-root45/2

Thus FACTORS are = 5, 3+root45/2, 3-root45/2

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Factorise x3-3x2-9x+5

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