已知实数x,y满足x+2根号y=2,化简二次根式根号2x+y.

已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y 已知实数x,y满足下x^2+根号2y=根号3,y^2+根号2x=根号3,求x/y+y/x 已知实数x,y满足x+2根号y=2,化简二次根式根号2x+y. 已知实数X,Y满足根号2X-Y-8+根号X+2y+1=0,求XY. 已知实数x,y满足根号(x-1)+y^2=4y-4,求(x-y)^2012的值 已知实数x,y满足根号2x-y的值+5x-6=y-根号y-2x,求x,y的值 实数x,y满足y=(根号2x)+(根号1-2x),求y最大值. 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 已知实数x,y,z满足x+y+z=2根号x-1+2根号y-1+2根号z-1求X+2Y+3Z 已知x,y都为实数,满足y=根号x-2+根号2-x+3,xy的值? 已知实数x,y满足3x+4y=5,则根号x^2+y^2的最小值等于 已知实数x,y满足3x+4y=5,则根号x^2+y^2的最小值等于 已知实数x,y满足 根号x-2 + (y+1)²=0,则x-y等于 已知实数x,y满足根号x-2+（y+1）²=.,则x-y 等于 已知实数x,y满足x^+y^+2x-2根号3y=0(1)x^+y^的最大值 （2）x+y的最小值 已知实数x,y满足x^2+根号2y=根号3且x不等于y求x+y和xy的值已知实数x,y满足x^2+根号2y=根号3,y^3+根号2x=根号3，且x不等于y，求x+y和xy的值 已知实数x,y满足x2+(根号2)*y=根号3,y2+(根号2)x=根号3且x≠y,求xy的值 已知实数X,Y满足3X-Y=4的根号2,2X+Y=根号2,求X+Y的值?