Question

разложите на множители x (x-y)+a (x-y) bx+by-x-y-ax-ay

Answer 1

1) x(x-y)+a(x-y) = (x-y)·(x+a)
2)bx+by-x-y-ax-ay = b(x+y) - (x+y) - a(x+y) = (x+y)·(b-1-a)