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)
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+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:根号32x除以根号2xy乘以2根号y的三次方
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
{化简} [x+y/(根号x+根号y)]+[2xy/x·根号y+y·根号x]
化简x十Y/根号x十根号y十2Xy/x根号y十y根号x
{(x-y)/(根号x+根号y)}-(x+y-2倍根号xy)/(根号x-根号y)=?
已知x =2y 化简(根号y/根号x -根号y )-(根号y/根号x +根号y)