(x-y)的6次方×(y-x)的5次方×(x-y)的4次方.

2024-12-04 23:58:08
推荐回答(1个)
回答(1):

解:(x-y)^6×(y-x)^5×(x-y)^4
=(y-x)^6×(y-x)^5×(y-x)^4
=(y-x)^(6+5+4)
=(y-x)^15