x²+xy-2y²=0,那么分式3x²+xy+6y²/x²+y
x²+xy-2y²=0,那么分式3x²+xy+6y²/x²+y
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
x+2y=0(x≠0),求分式x²-xy分之2xy+y²
分式(x²-y²\xy)-(xy-y²\xy-x²)可化简为
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
1.若x/y=2,求分式x²-xy+3y²/x²+xy+6y²的值
分式的化简求值已知x/y=2求x²-xy+3y²/x²+xy+6y²
已知 3X-4y=0 求分式3x²-y²分之x²+2xy
x²/xy-x/y
计算:(xy-x²)×x-y/xy
x²-6y²=﹣xy 且x>0,y>0 求分式x+3y/x-y的值