化成最简分式1.x²+xy-2y²/x²-xy-6y² 2.2xy-4/x
化成最简分式(1)2xy-4/x²y²+3xy-10 (2)2x²+xy-6y²
化成最简分式:x²-xy-6y²分之x²+xy-2y²
分式(x²-y²\xy)-(xy-y²\xy-x²)可化简为
计算:(xy-x²)×x-y/xy
x²/xy-x/y
分式除法(2y-x)÷x²-4xy+4y²/x+3xy要过程
3x+4y=0 x不等于0 求分式2xy+y²/x²-xy
若x+2y=0,xy不等于0,求分式x²+2xy/xy+y²的值
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
请你先化简分式x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y),再将x=
化简求值 分式x²-4/xy-x+2y-2,其中x=-8,y=1/2