Question

Fatoração:

(x-y)^2 - 2(x-y)
---------------------
ax-ay+2x-2y

Answer 1

$\dfrac{(x-y)^{2}-2(x-y)}{ax-ay+2x-2y}=\dfrac{(x-y)[(x-y)-2]}{a(x-y)+2(x-y)}=\dfrac{(x-y)[(x-y)-2]}{(x-y)(a+2)}\\\\=\dfrac{x-y-2}{a+2}$