数学(x-y)^5*(y-x)^3*(x-y)^2谢谢 还有步骤!
问题描述：
数学(x-y)^5*(y-x)^3*(x-y)^2
谢谢 还有步骤!
答
(x-y)^5*(y-x)^3*(x-y)^2
=-(x-y)^5*(x-y)^3*(x-y)^2
=-（x-y）^(5+3+2)
=-(x-y)^10