Question

Решите пожалуйста 2 и 4 варианты

Answer 1

${x}^{3} + 3 {x}^{2} + x = x( {x}^{2} + 3x + 1) div \ 5a + 5b - ay - by = 5(a + b) - y(a + b) = (a + b)(5 - y) \ 8x - 8y - 3 {y}^{2} + 3xy = 8(x - y) + 3(x - y) = (x - y)(8 + 3)$

Answer 2

дальше не знаю