(x-y)的5次方(y-x)的5次方+[(x-y)的5次方]²

问题描述:

(x-y)的5次方(y-x)的5次方+[(x-y)的5次方]²

(x-y)的5次方(y-x)的5次方+[(x-y)的5次方]²
=-(x-y)的10次方+(x-y)的10次方
=0