Question

factorisethe following by using the identities or regrouping :-
a. 2x^2-32x+128
b. 3x^2+18x+27

Answer 1

a)2x^2-32x+128
Divide by 2 whole equation
x^2-16x+64
x^2-8x-8x+64
x(x-8)-8(x-8)
(x-8)(x-8)
x = -8 , -8
************

b)3x^2-18x+27
Divide by 3 whole equation
x^2-6x+9
x^2-3x-3x+9
x(x-3)-3(x-3)
(x-3)(x-3)
x = -3 & -3
*************
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Answer 2

Here is the solution of your answer