(x-y)的三次方除以(y-x)的二次方怎么做

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(x-y)的三次方除以(y-x)的二次方怎么做(x-y)的三次方除以(y-x)的二次方怎么做(x-y)的三次方除以(y-x)的二次方怎么做(x-y)^3/(y-x)^2=(x-y)^3/[-(x-y)

(x-y)的三次方除以(y-x)的二次方怎么做
(x-y)的三次方除以(y-x)的二次方怎么做

(x-y)的三次方除以(y-x)的二次方怎么做
(x-y)^3/(y-x)^2
=(x-y)^3/[-(x-y)]^2
=(x-y)^3/(x-y)^2
=x-y