(x-y)的立方乘(y-x)的七次方=-(x-y)——
问题描述:
(x-y)的立方乘(y-x)的七次方=-(x-y)——
答
(x-y)的立方乘(y-x)的七次方=-(x-y)的10次方
(x-y)^3*(y-x)^7=(x-y)^3*[-(x-y)^7]=-(x-y)^(3+7)=-(x-y)^10