【初二数学】1/x-1/y=3,则分式(4x+3xy-4y)/(x-2xy-y)=_________
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)
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-
1.已知x^2-4y^2=0,则分式(x^2-xy+y^2)/(x^2+xy+y^2)的值为_________.
初中数学分式已知x/y=2,求(x*x-xy+3y*y)/x*x+xy+6y*y的值
已知1/x-1/y=3,求分式(4x-5xy-4y)/(3x-2xy-3y)的值
八下数学分式(1)已知1/x-1/y=5,求分式3x+5xy-3y/x-3xy-y的值(2)已知x+1/x=3,求分式x
解一道分式题已知1/x-1/y=3 求分式(4x-5xy-4y)/(3x-2xy-3y)的值.
1.若1/x+1/y=2,则分式2x+3xy+2y/x+2xy+y=( )
已知1/x+1/y=5,则分式(3x+2xy+3y)/(2x-xy-2y)的值是多少?
已知1/x-1/y=3,求分式(2x+3xy-2y)/(x-2xy-y)
若X/1-y/1=3 求分式:x-2xy-y/2x+3xy-2y
已知1/x+1/y=3,求分式3x-2xy+3y/x+xy+y的值