x根号x-y根号y除以x+根号xy+y
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)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
根号xy 除以 2倍根号x分之y^2
(x+2根号xy+y)除以(根号x+根号y)把它根式有理化
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)
{(x-y)/(根号x+根号y)}-(x+y-2倍根号xy)/(根号x-根号y)=?
5x根号xy除以3根号x分之y乘以3分之1根号y分之x(x>0)
X-Y除以根号下X减根号Y
(x-4根号xy+4y)除以(根号x-2根号y)+(2根号xy+x)乘以根号x分之一
【(x-y)^3(x^1/2+y^1/2)^-3+3(x根号y-y根号x)】/(x根号x+y根号y)+(2xy根号xy-
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号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).