(x^2-xy)y÷y-x/xy怎么做?
(x^2-xy)y÷y-x/xy怎么做?
有谁知道数学通分X-Y/2X+2Y与XY/(X+Y)怎么做?
(xy-x^2)乘以(xy)/(x-y)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
计算(xy-y^2)÷x-y/xy
因式分解(xy-1)²+(x+y-2)(x+y-2y)怎么做哇?
(x^2+xy/x-y)/(xy/x-y)计算
计算:4xy-(x+y)^2/xy(x+y)(x-y)÷x^2+xy-2y^2/x^2y+2xy^2
2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分
x平方+xy-2y平方+2x+7y-3因式分解怎么做,谢谢
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
计算:(x+y/x-y)÷(xy+x^2)