一道数学计算题,要计算过程,

问题描述:

一道数学计算题,要计算过程,
{12(x+y)^3(y-x)}^3÷{4(x+y)^2(x-y)}^2

{12(x+y)^3(y-x)}^3÷{4(x+y)^2(x-y)}^2
=-[1728(x+y)^9(x-y)^9]÷[16(x+y)^4(x-y)^2]
=-108(x+y)^5(x-y)^7