1若x+2y=0 ,xy不等于0,求分式 x^2+2xy / xy+y^2
1若x+2y=0 ,xy不等于0,求分式 x^2+2xy / xy+y^2
若x+2y=0,xy不等于0,求分式x²+2xy/xy+y²的值
已知x+2y=0(x不等于0)求分式2xy+y^2/x^2-xy
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xy+y^2分之x^2-2xy的值
若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+2xy的值
若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值
已知x-3y=0,且xy不等于0,求分式x*2-xy+y*2/x*2+xy+y*2的值
已知x+2y=0(x不等于0)求分式2xy+y2/x2-xy
已知x+2y=0,求分式2xy+y^2/x^2-xy
初二数学分式化简已知x-3y=0(xy不等于0),求【(2x+y)/(x²-2xy+y²)】*(x-
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值