根号xy除以x-y分之根号x+根号y 即:根号xy/(根号x+根号y)/(x-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)
根号xy 除以 2倍根号x分之y^2
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
化简 x+根号xy+y分之x根号x-y根号y
已知y=根号1-x+根号x-1+3,求根号x+根号y分之x+2根号xy+y+根号x-根号y分之一的值
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)
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)
计算 (xy-y2分之x根号x+x根号y)-(x根号x-y根号y分之x+根号xy+y)
{(x-y)/(根号x+根号y)}-(x+y-2倍根号xy)/(根号x-根号y)=?
(x+2根号xy+y)除以(根号x+根号y)把它根式有理化
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号y)}
3根号xy分之2根号x的平方y