(1) -16x^2 y^2+12x^3 y^5 z - 8xy^2 z^3 (2) x^3-6x^2+9x (3) (m-4)^_数学解答

(1) -16x^2 y^2+12x^3 y^5 z - 8xy^2 z^3 (2) x^3-6x^2+9x (3) (m-4)^2+(4-m)

人气：241 ℃　时间：2020-06-04 04:56:50

解答

(1)原式=-4xy^2(4x-3x^2y^3z+2z^3)
(2)原式=x(x-3)^2
(3)原式=(m-5)(m-4)