已知圆G：x^2+y^2-2x-根号2y=0经过椭圆x^2/a^2+y^2/b^2=1的右焦点F及上顶点B,过圆外一点M(m,0)(m>a)做倾斜角为5π/6的直线l交于椭圆C.D两点1,求椭圆的方程2,若右焦点F再以cd为直径的圆E的内部,求m的取值

已知x=2y,化简根号y/(根号x-根号y)-根号y/(根号x+根号y) 已知x=2y,化简根号y/(根号x-根号y)-根号y/(根号x+根号y) 已知x=2y,化简:根号y/根号x -根号y -根号y/根号x +根号y 已知x =2y 化简（根号y/根号x -根号y )-(根号y/根号x +根号y) 已知y=根号(x-8)+根号(8-x)+18,求代数式[(x+y)/(根号x+根号y)]-2xy/(x根号y-y根号x)的值 代数式求值.已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号y)已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号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：根号y/x+根号x/y=3倍根号2/2,求y/x+x/y的值? 已知4x2+9y-4x-6y+2=0 求根号y/根号x+根号y - 根号y/根号x-根号y快. 已知4x2+9y-4x-6y+2=0 求根号y/根号x+根号y - 根号y/根号x-根号y急用. 已知x=2y,y＝0,化简,根号y/(根号x-根号y)-根号y/(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 x+y/根号X-根号Y-2XY/X乘根号Y-Y乘根号X 根号x-根号y分之x+y-x根号y-y根号x分之2xy 已知根号x=根号2-1/根号2,根号y=根号3-1/根号3,求代数式【(x+y)/(根号x-根号y)】-求代数式【(x+y)/(根号x-根号y)】-2xy/（x根号y-y根号x）已知根号x=根号2-（1/根号2）,根号y=根号3-（1/根号3）,求代数 已知2/x+2/y=根号24,求 x/y(x-y) - y/x(x-y)的值 已知2/x 2/y=根号24,求 x/y(x-y) - y/x(x-y)的值