根号x+y+2+|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）yx根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）yx根号x+x根号y/xy-y^2)-（x+根号x

x+y/根号X-根号Y-2XY/X乘根号Y-Y乘根号Xx+y/根号X-根号Y-2XY/X乘根号Y-Y乘根号Xx+y/根号X-根号Y-2XY/X乘根号Y-Y乘根号Xx+y/根号X-根号Y-2XY/X乘根

根号x-根号y分之x+y-x根号y-y根号x分之2xy根号x-根号y分之x+y-x根号y-y根号x分之2xy根号x-根号y分之x+y-x根号y-y根号x分之2xy化简：根据文字理解,是这样的吗?√x-

2根号XY×根号Y\X(Y2根号XY×根号Y\X(Y2根号XY×根号Y\X(Y2根号XY×根号Y\X(Y2根号XY×根号Y\X(Y=2√(XY×Y\X)=2√Y²=-2Y5根号45×2\3根

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)已知x=2y,化简根号y/(根号x-根号y)-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)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/(

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)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

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)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

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)化简:(x-y)除以(根号x+根

4x-y/2根号x+根号y9x-6根号xy+y/3根号x-根号y4x-y/2根号x+根号y9x-6根号xy+y/3根号x-根号y4x-y/2根号x+根号y9x-6根号xy+y/3根号x-根号y1、4X

{（x-y)/(根号x+根号y)}-(x+y-2倍根号xy)/(根号x-根号y)=?{（x-y)/(根号x+根号y)}-(x+y-2倍根号xy)/(根号x-根号y)=?{（x-y)/(根号x+根号y)

(根号x+根号y-1)(1-根号y+根号x),其中x=3根号2,(根号x+根号y-1)(1-根号y+根号x),其中x=3根号2,(根号x+根号y-1)(1-根号y+根号x),其中x=3根号2,(√x+

根号x+2y×根号2x+4y根号x+2y×根号2x+4y根号x+2y×根号2x+4y解∵x+2y≥0∴√(x+2y)×√(2x+4y)=√2√(x+2y)²=√2(x+2y)

任意x,y.使得根号x+根号2y任意x,y.使得根号x+根号2y任意x,y.使得根号x+根号2y√x+√(2y)=0,y>=0.需要求√[x/(x+y)]+√[2y/(x+y)]的最大值.设√[x/(

化简:(根号X/Y)+(根号y/x)化简:(根号X/Y)+(根号y/x)化简:(根号X/Y)+(根号y/x)先把分母都变成根号XY再相加得到（X+Y）/根号XY再把分母有理化得到（X+Y）*根号XY/

化简(x-y)/(根号x+根号y)化简(x-y)/(根号x+根号y)化简(x-y)/(根号x+根号y)(x-y)/(根号x+根号y)=((根号x)²-(根号y)²)/(根号x+根号

根号X(根号X+根号Y)=3根号Y(根号X+5根号Y),求(X+根号XY-Y)分之(2X+根号XY+3Y)的值根号X(根号X+根号Y)=3根号Y(根号X+5根号Y),求(X+根号XY-Y)分之(2X+

如果X>0,Y>0,且根号X(根号X+根号Y)=3根号Y(根号X+5根号Y),求（2X+根号XY+3Y）/（X+根号XY-Y）的值.如果X>0,Y>0,且根号X(根号X+根号Y)=3根号Y(根号X+5

已知x>0,y>0根号x(根号x+2倍根号y)=根号y(6倍根号x+5倍根号y)求:(x+根号xy-y)/(2x+根号xy+3y)的值已知x>0,y>0根号x(根号x+2倍根号y)=根号y(6倍根号x