计算：(y-x)^3(x-y)^m-(x-y)^m+2(y-x)

分类: 作业答案 • 2021-12-31 22:32:19

问题描述：

答

[(y-x)^3]*[(x-y)^m]-[(x-y)^(m+2)]*(y-x)
=-[(x-y)^3]*[(x-y)^m]+[(x-y)^(m+2)]*(x-y)
=-[(x-y)^(m+3)]+[(x-y)^(m+3)]
=0