化简(x-y)/(根号x+根号y)
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)
已知x =2y 化简(根号y/根号x -根号y )-(根号y/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
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x+根号y分之x-y化简
根号X-Y加上根号Y-X 化简
{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
化简 x+根号xy+y分之x根号x-y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).
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根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y