根号(10xy)*根号(30xy)(x>0,y>0)=?
已知:x>0,y>0,x-2y=根号xy.求(x+(根号xy)+y)/(x-(根号xy)-y)
已知X—根号3XY-4Y=0,求(2X+3根号XY-2Y)/(3X-根号XY+Y)的值
已知x平方+y平方-2y+1=0,求(根号x+根号y+3)/((根号xy+y)(3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
根号下(x^2-2xy+y^2/xy)化简 x>y>0
若|x+根号3|+|y-根号3/3|=0,则(xy)2001次方=?
x-4根号(xy)-5y=0(根号x - 5根号y)(根号x+ 根号y)=0为什么
已知x大于0 y大于0 且x+6y=5根号xy 求x+根号xy+2y分之2x+根号(xy-y)的值
已知:x-2根号xy)-15y=0 (x大于o y大于o)求:2x+根号xy-3y/x+根号xy-y 的值.
①{(x+y)/(根号x+根号y)}+{2xy/根号xy(根号x+根号y)}
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
已知正实数x y满足x-根号xy-2y=0求 x+3根号xy+2y/2x-2根号下xy-y