根号x+y-1+(xy+2)∧2=0,则X,Y的取值
已知y根号[(x-1)/y]=负根号[(x-1)y],求xy的取值范围,并化简根号[2xy-(x^2+1)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
已知x>0,y>0,且x+6y=5根号xy,求(2x+根号xy-y)分之(x+根号xy+2y)的值
若X>0,y>0,且x-根号下xy-2y=0,求(2x-根号下xy)/y+2根号下xy的值
已知 X大于0,Y大于0,且X-根号XY-2Y=0,求2X-根号XY除以Y+2根号XY的值
若x>0,y>0,且x-根号下xy-2y=0,求【2x-根号下xy】÷【y+2根号下xy】的值
若x>0,y>0,且x-根号xy-2y=0,求y+2倍根号xy分之2x-根号xy的值
已知X—根号3XY-4Y=0,求(2X+3根号XY-2Y)/(3X-根号XY+Y)的值
1.若x分之1-y分之1=2,则求x-xy-y分之3x+xy-3y=0的值.2.设x,y为实数,且x-y=3.求x乘根号
设x大于0,y大于0,xy=4.则s=x/根号y+y/根号x取最小值时x的值
已知根号x(根号x-根号y)=根号xy+3y,求(3x-y)分之2x+3倍根号xy-y 的值
设x>0,y>0,且xy=4,则y/根号x+x/根号y取最小值时x的值是