还有(a-b)x(b-a)^2(b-a)^3 =(m-n)^2(n-m)^15 =(ab^2)^2(-a^3 b)^3(-5ab) =(-5)^15 x (-2)^15 =

问题描述:

还有
(a-b)x(b-a)^2(b-a)^3 =
(m-n)^2(n-m)^15 =
(ab^2)^2(-a^3 b)^3(-5ab) =
(-5)^15 x (-2)^15 =