(x-y)的五次方÷(y-x)的三次方(y-x)的两次方
问题描述:
(x-y)的五次方÷(y-x)的三次方(y-x)的两次方
答
(x-y)^5/[(y-x)^3(y-x)^2]
=(x-y)^5/[-(x-y)^3(x-y)^2]
=(x-y)^5/[-(x-y)^5]
=-1.