化简(x-y)²(x²+xy+y²)²-(x³+y³)(-x

[-xy/(x-y)²]²×(y²-xy/x)³ 化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x&# x²/xy-x/y -x³y³-x²y²+xy x³y-2x²y²+xy³ 计算：(xy-x²)×x-y/xy [x（x²y²-xy）-y（x²-x³y）]÷3x²y 【x(x²y²-xy)-y(x²-x³y)】÷3x²y 因式分解：[x（x²y²-xy）-y（x²-x³y）]÷3x²y 多项式因式分解 1,(x-y)³-(x-y)²(x+y) 2,x(x²-xy)-(4x&# 分解因式计算6x³y（x-y)³-4xy³(y-x)² 因式分解x的5次方y-x³y+2x²y-xy