Question

(x-y)·(y-x)的立方·(x-y)的平方·(y-x)

Answer 1

(x-y)(y-x)³(x-y)²(y-x)

=(x-y)[-(x-y)³](x-y)²[[-(x-y)]

=(x-y)(x-y)³(x-y)²(x-y)

=(x-y)的(1+3+2+1)

=(x-y)的7次方

明白请采纳,

有新问题请求助,