Question

a) b(1+b)-2(b+1)
б) cx-cy+2x-2y

Answer 1

а) b(1 + b) - 2(b + 1) = b(1 + b) - 2(1 + b) = (1 + b)(b - 2)

б) cx - cy + 2x - 2y = c(x - y) + 2(x - y) = (x - y)(c + 2)