化简(X²+2XY+Y²)(X²—XY+Y²)²
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
化简(X²+2XY+Y²)(X²—XY+Y²)²
(x+y)(x²-xy+y²)—xy(x+y)因式分解
计算:(xy-x²)×x-y/xy
化简(3X²-XY+Y²)-5(X²-XY+2Y²)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
计算:(xy-x²)乘 x-y分之xy
计算;(xy-x²)÷x²-2xy+y²/xy · x-y/x²
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
x²/xy-x/y
分式(x²-y²\xy)-(xy-y²\xy-x²)可化简为
计算 2xy[4x²y²-3y(xy+x²y)-xy²]