若xy=x-y≠0,则分式1y−1x=( )
若xy=x-y≠0,则分式1y−1x=( )
1若x+2y=0 ,xy不等于0,求分式 x^2+2xy / xy+y^2
1.若1/x+1/y=2,则分式2x+3xy+2y/x+2xy+y=( )
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/1-y/1=3 求分式:x-2xy-y/2x+3xy-2y
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)
若xy=x-y不等与0,则分式y分之1减x分之1等于?
已知1/x-1/y=2001,求分式x-xy-y/x-y的值
若x+3y=0,xy≠0,则分式x
xy=x-y≠0则分式x分之一减y分之一等于多少?
若xy=x-y不等于0,则分式:y分之一减x分之一等于多少?
x+2y=0(x≠0),求分式x²-xy分之2xy+y²