已知xy<0,化简 x根号下-y^3/x^2
已知xy<0,化简 x根号下-y^3/x^2
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
已知x>0,y>0且x-2根号下xy-15y=0,则2x+根号下xy+3y除以x+根号下xy-y=?
已知X+Y=—3,XY=2求根号下x/y+根号下y/x的值
求细细讲解1.2.已知x>0,y>0且x-2根号下xy-15y=0,则2x+根号下xy+3y除以x+根号下x
根号下(x^2-2xy+y^2/xy)化简 x>y>0
根号下(x^2-2xy+y^2/xy)化简 (x>y>0)
已知“根号下xy+根号y-2倍的根号x-2=0”求x,y
已知y=根号下(x-4)+根号下(4-x)+3,求代数式(x-y+4xy/x-y)(x+y-4xy/x+y)?
已知x>0,y>0,x+2y+2xy=8,求x+2y的最小值.x+2y+2xy=8≥2倍根号下2xy+2xy 令根号下x
已知x、y满足根号下4x-5y+根号下x-y-1=0,则根号下xy-根号下x/y
已知X—根号3XY-4Y=0,求(2X+3根号XY-2Y)/(3X-根号XY+Y)的值