[(x+y)(x-y)]的九次方除以(y-x)的八次方除以(-x-y)的九次方(x不等于y,x+y不等于0)

问题描述:

[(x+y)(x-y)]的九次方除以(y-x)的八次方除以(-x-y)的九次方(x不等于y,x+y不等于0)

Y-X请问有过程吗(y-x)的8次方和(x-y)的8次方一样(-x-y)的9次方和-(x+y)的9次方一样约分就行了(x-y)是九次方呀....不太明白所以最后剩—(x-y)啊得y-x