а) (a+b)x^2 + (a+b)y = (a+b)(x^2+y)б) 5x+2y-10-xy = 5(x-2) + 2(y-5)в) 7x-ac-cx+7a = (7-a)(x-c)г) y^3+3y^2-y-3 = (y+3)(y^2-1) = (y+3)(y+1)(y-1)д) x^2-2ax-4a^2x+8a^3 = (x^2-4a^2)(x-2a) = (x+2a)(x-2a)(x-2a)
а) (a+b)x^2 + (a+b)y = (a+b)(x^2+y)
б) 5x+2y-10-xy = 5(x-2) + 2(y-5)
в) 7x-ac-cx+7a = (7-a)(x-c)
г) y^3+3y^2-y-3 = (y+3)(y^2-1) = (y+3)(y+1)(y-1)
д) x^2-2ax-4a^2x+8a^3 = (x^2-4a^2)(x-2a) = (x+2a)(x-2a)(x-2a)