Question

21. (x - y)^2 – 2(x - y)
Factorise the following expression​

Answer 1

answer

-(x-y)^2

Step-by-step explanation:

we will take x-y common

(x-y)((x-y)-2(x-y))

(x-y)(x-y-2x+2y)

(x-y)(y-x)

-(x-y)^2