Question

1. ax-ay+bx-by
2. 4x+ac+cx+4a
3. ab+ac-2b-2c
4. 6a+6y+pa+py
5. 4x+4y+16+xy

Answer 1

Последнюю че та не знаю ну посмотришь

Answer 2

$ax - ay + bx + by = a(x - y) + b(x - y) = \ = (x - y)(a + b) \ 4x + ac + cx + 4a = 4(x + a) + c(x + a) = \ = (x + a)(4 + c) \ ab + ac - 2b - 2c = a(b + c) - 2(b + c) = \ = (b + c)(a - 2) \ 6a + 6y + pa + py = 6(y + a) + p(y + a) = \ = (a + y)(6 + p) \ 4x + 4y + 16 + xy = x(4 + y) + 4(4 + y) = \ = (4 + y)(4 + x)$