(x-y)乘以(y-x)的二次方乘以(x-y)五次方

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(x-y)乘以(y-x)的二次方乘以(x-y)五次方
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(x-y)乘以(y-x)的二次方乘以(x-y)五次方
(x-y)乘以(y-x)的二次方乘以(x-y)五次方

(x-y)乘以(y-x)的二次方乘以(x-y)五次方
原式
=(x-y)乘(x-y)的2次方 乘 (x-y)的5次方
=(x-y)的(1+2+5)次方
=(x-y)的8次方