а) ax-ay+bx-by = (a-b)x + (-a+b)y = (a-b)(x-y)
б) 2x+7y+14+xy = 2x + xy + 7y + 14 = x(2+y) + 7(2+y) = (x+7)(2+y)
в) ay-12bx+3ax-4by = ay + 3ax - 12bx - 4by = a(y+3x) - 4b(y+3x) = (a-4b)(y+3x)
а) ax-ay+bx-by = (a-b)x + (-a+b)y = (a-b)(x-y)
б) 2x+7y+14+xy = 2x + xy + 7y + 14 = x(2+y) + 7(2+y) = (x+7)(2+y)
в) ay-12bx+3ax-4by = ay + 3ax - 12bx - 4by = a(y+3x) - 4b(y+3x) = (a-4b)(y+3x)