化成最简分式:x²-xy-6y²分之x²+xy-2y²
化成最简分式:x²-xy-6y²分之x²+xy-2y²
化成最简分式(1)2xy-4/x²y²+3xy-10 (2)2x²+xy-6y²
x+2y=0(x≠0),求分式x²-xy分之2xy+y²
化简分式2y-xy分之x的²-2x
分式(x²-y²\xy)-(xy-y²\xy-x²)可化简为
把分式2x²-18分之xy化成两个分式的乘积形式
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
数学分式化简化简y²-x²分之3x-3y+(x²-y²分之x²-2xy
已知分式x²+3分之x-2y的值为0,求分式x²-y²分之x²-3xy-4y
若x+2y=0,xy不等于0,求分式x²+2xy/xy+y²的值
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
分式的化简求值已知x/y=2求x²-xy+3y²/x²+xy+6y²