(a-b)(5+2(a-b))
(x-y-xy)(x-y+xy)
Пошаговое объяснение:
5(a-b)+2(a-b)^2=(a-b)(5+2(a-b))
3(a-b)+x(a-b)=(a-b)(5+2(a-b))
(x-y)^2-x^2y^2=(x-y-xy)(x-y+xy)
