化简根号9x²y²
化简求值:(X×根号X+X×根号y)÷(XY-Y²)-(X+根号XY+Y)÷X×根号X-Y×根号Y,其中X=1
数学分式化简(xy-y²)分之(y×根号x +x×根号y ) -(x×根号下x-y×根号下y)分之(x+根号下
已知x=2y,化简根号y/(根号x-根号y)-根号y/(根号x+根号y)
如下根号9x/根号64y²
根号下x²+(y+3)²+根号下x²+(y-3)-10 怎么化简这个方程?
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)]
化简求值:根号x^-2xy+y^2 + x^2 -6xy+9y^2/x-3y,其中x=根号3,y=根号5
已知x、y为实数,且y<根号下x-2+根号下2-x+3分之一,化简根号下(x-3)²+根号下(3y-1)
若x>0,化简根号下-9x/y
已知x、y为实数,且根号x²=根号3-根号2,根号y平方=根号2,x+y≠根号3,求x-y