若(Y-X)÷(XY)=3,求分式(2X+3XY-2Y)÷(X-2XY-Y)
若(Y-X)÷(XY)=3,求分式(2X+3XY-2Y)÷(X-2XY-Y)
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)
已知x-5y=0,求分式x²-2xy+y²/3x+y × (y-x)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
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
1.若x/y=2,求分式x²-xy+3y²/x²+xy+6y²的值
已知 (x+1)² +|y-1|=0,求 2(xy-xy²)-(3xy²-xy) 的值.
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
若y-x/xy=3,求分式2x+3xy-2y/x-2xy-y
计算:3xy[2xy-x(y-2)+x]
已知x+2y=11,x-2y=4,求分式[x/(x^2-2xy+y^2)]÷(x^2+xy+y^2)/(x^3-y^3)
(x+2y-3xy)-(-2x-y+xy),其中x+y=,xy=-,求值.