a) ax - ay + bx - by = a(x - y) + b(x - y) = (a + b)(x - y)
б) 5a + 5y + pa + py = 5(a + y) + p(a + y) = (5 + p)(a + y)
a) 2x + ac + cx + 2a = 2x + 2a + ac + cx = 2(x + a) + c(a + x) = (2 + c)(x + a)
б) 2x + 7y + 14 + xy = 2x + xy + 7y + 14 = x(2 + y) + 7(y + 2) = (x + 7)(y + 2)
a) ab + ac - 4b - 4c = a(b + c) - 4(b + c) = (a - 4)(b + c)
б) 3a - 3m - ay + my = 3(a - m) - y(a - m) = (3 - y)(a - m)
a) 2ax + 3by + 6ay + bx = 2ax + bx + 3by + 6ay = x(2a + b) + 3y(b + 2a) = (x + 3y)(2a + b)
в) ay - 12bx + 3ax - 4by = ay - 4by + 3ax - 12bx = y(a - 4b) + 3x(a - 4b) = (y + 3x)(a - 4b)
б) 3c + 3c² - a - ac = 3c(1 + c) - a(1 + c) = (3c - a)(1 + c)
г) a²b² + ab + abc + c = ab(ab + 1) + c(ab + 1) = (ab + c)(ab + 1)
a) ax + bx + cx + ay + by + cy = x(a + b + c) + y(a + b + c) = (x + y)(a + b + c)
Ответ: смотри выше