若x>0,y>0,且x-根号xy=6y,则x/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
若x,y为实数,且根号x+y+3+x-y-2绝对值=0,则xy=
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
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>0,y>0,且根号x(根号x+根号y)=3根号y(根号x+5根号y),求代数式2x+根号xy+2y\x-根号xy-
已知x-y=3xy,且xy不等于0,则-3x+6xy+3y/(7x-5y)-9xy-(3x-y)
若实数xy满足x≥y≥2,且2x²-xy-8x+2y+9=0,则根号xy的值
已知x,y为实数,且根号x+x+根号y+y=0,则代数式根号x^5y
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
已知x>0y>o且x-5根号xy-6y求(x-2根号xy+y)/x+根号xy-2y