化简(x+2根号下xy+y)除以(根号x+根号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
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)]
(x+y)/(根号下x+根号下y)+2xy/(x根号下y+y根号下x)=______.
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)
根号xy 除以 2倍根号x分之y^2
(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
2倍根号下x的平方y除以3倍根号下xy等于多少
化简:根号32x除以根号2xy乘以2根号y的三次方
①{(x+y)/(根号x+根号y)}+{2xy/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
(根号下y-x)平方+根号下x平方-2xy+y平方 化简