计算:(xy-x²)乘 x-y分之xy
计算:(xy-x²)乘 x-y分之xy
计算:(xy-x²)×x-y/xy
计算(-4xy)乘(xy+3x²y)
小明在做化简求值题:(xy-x²)÷xy分之x²-2xy+y²乘x²分之x-y
计算:2x+2y分之3y + x²+xy分之2xy
计算:1、(xy分之x²-y²)×(x-y分之x)-(y分之x);
分数的乘除计算(xy-x的平方)÷xy分之x-y(x的平方+x分之4x的平方-1)乘(1-2x分之x+1)÷x分之1x-
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
化简求值(xy-x²)/xy分之x²-2xy+y²乘x²分之x-y,其中y=二分
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
计算xy-y²分之x²+2xy+y²÷x²-2xy+y²分之xy+y&
(1)(xy-x²)除以xy分之x²+y²-2xy 乘 x²分之x-y (2)先