若2x=-y,则分式(xy)/(x²-y²)=_____
若2x=-y,则分式(xy)/(x²-y²)=_____
若x/y=2,则分式x²-y²/xy的值为
若x/y=2则分式x²-y²/xy的值
若x/y=2,则分式x²-y²/xy的值为?
若1/x-1/y=3,则分式(2x+3x y-2y)/(x-2xy-y)=_____
若x+2y=0,xy不等于0,求分式x²+2xy/xy+y²的值
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
若y-x/xy=3,求分式2x+3xy-2y/x-2xy-y
x+2y=0(x≠0),求分式x²-xy分之2xy+y²
3x+4y=0 x不等于0 求分式2xy+y²/x²-xy
1.若x/y=2,求分式x²-xy+3y²/x²+xy+6y²的值
代数分式 一道题若x÷y=2,则分式(x²-xy+3y²)÷(x²+xy+6y²