(x-y)²×（y-x）³=(y-x)²×（y-x）³=(y-x)^5 不懂可追问，有帮助请采纳，谢谢！
（y-x）²x(y-x)^3=(y-x)^5
(x-y)²×（y-x）³=(y-x)²×（y-x）³=(y-x)^5
