若x+y-2x-6y+10=0,则分式x-y/x-2xy+y的值为
若(x-4y)(x+3y)=0 且xy>0 则分式x+3y/2x-y的值为
若x/y=2,则分式x²-y²/xy的值为
若x/y=2,则分式x²-y²/xy的值为?
若x+y/x-y=6,把x,y的值都扩大二倍,则分式的值为 ;若xy/x-y=6 ,把x,y的值都扩大2倍,则分式的值为
已知1/x-1/y=2010,则分式(x+2xy-y)/(x-y)的值为多少?
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
初中数学分式已知x/y=2,求(x*x-xy+3y*y)/x*x+xy+6y*y的值
若分式xy/x+y中的x,y都扩大2倍,则分式的值
若实数x,y满足1/x-1/y=5,则分式3x-2xy-3y/x+xy-y的值等于?
若x/y=2则分式x²-y²/xy的值
1.已知x^2-4y^2=0,则分式(x^2-xy+y^2)/(x^2+xy+y^2)的值为_________.
已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值