(x-y)的立方 * (x-y)的平方 * (y-x) 等于几
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(x-y)的立方 * (x-y)的平方 * (y-x) 等于几
(x-y)的立方 * (x-y)的平方 * (y-x) 等于几
(x-y)的立方 * (x-y)的平方 * (y-x) 等于几
(x-y)的立方 * (x-y)的平方 * (y-x)
=(x-y)的立方 * (x-y)的平方 * [-(x-y)]
=-(x-y)^6
(x-y)的立方 * (x-y)的平方 * (y-x)
=(x-y)的立方 * (x-y)的平方 * [-(x-y)]
=-(x-y)的(3+2+1)次方
=-(x-y)的6次方
=-(x-y)^6
-(x-y)的6次方