Question

- Factorise the following:
(i) (x2 - 2x)2 - 2(x2 - 2x) - 3
(iii) (x + y)2 - 7(x2 - y2) + 12(x - y)
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Answer 1

Answer:

(x+y) 2-7{(x+y)(x-y)}+12(x-y)

Take x+y common

X+y(x+y-7(x-y)+12)

X+y(x+y-7x+7y+12)

X+y(-6x+8y+12)