数学计算题(x-y)²(y-x)³不对，题错了是(x-y)²-(y-x)³

数学计算题(x-y)²(y-x)³不对，题错了是(x-y)²-(y-x)³
数学计算题(x-y)²(y-x)³
不对，题错了是
(x-y)²-(y-x)³

数学计算题(x-y)²(y-x)³不对，题错了是(x-y)²-(y-x)³
原式=(x-y)²-[-（x-y)]³
=(x-y)²+(x-y)³
=(x-y)²(x-y+1)

（x-y）^2+(x-y)^3
=（x-y）^2(1+x-y)