化简:根号y³-6xy²+9x²y/x(y
化简(y根号x+x根号y)/(xy-y²)-(x+根号xy+y)/(x根号x-y根号y).
化简:[(x×根号x+x×根号y)/(xy-y²)]-[(x+根号下xy+y)/(x×根号x-y×根号y)]
化简:((根号x-根号y)^3+2x根号x+y根号y)/(x根号x+y根号y)+(3根号xy-3y)/(x-y)
[-xy/(x-y)²]²×(y²-xy/x)³
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
当x=根号6,y=根号2时,求代数式xy分之x²-y²-xy-x²分之xy-y²
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
已知(x+y-10)²+根号xy-6=0,求x³y-2x²y²+xy³
化简:(x-y)除以(根号x+根号y)-(x-2根号xy+y)除以(根号x-根号y)
x²/xy-x/y
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x
化简:5根号X^3Y-2Y根号XY-6根号XY+根号X分之Y+根号Y分之X