(x-y)(y-x)的4次方乘(x-y)的m+n+1的次方再乘(y-x)的3次方等于

问题描述:

(x-y)(y-x)的4次方乘(x-y)的m+n+1的次方再乘(y-x)的3次方等于

=-(x-y)(x-y)^4(x-Y)^m+n+1(x-y)^3=-(x-y)^m+n+9