xy不等于0 ,3x^2-2xy-8y^2=0,求x/y的值

已知x^2-xy+3y^2=0 且xy不等于0 求x/y+y/x 的值 已知2x^2-3xy+y^2=0,xy不等于零,求x/y+y/x的值 已知 xy不等于0且 3x^2 - 2xy - 8y^2=0求x/y的值! xy不等于0 ,3x^2-2xy-8y^2=0,求x/y的值 已知xy不等于零,且3x^2-2xy-8y^2=0,求x/y的值 已知xy不等于0,且3x² -2xy-8y²=0,求x/y的值 已知x²-2xy=3xy-6y² ,求x/y(y不等于0)的值 已知x^2+xy-2y^2=0 (x不等于0,y不等于0）,求x/y-y/x-(x^2+y^2)/xy的值 若x+2y=0,xy不等于0,求分式x²+2xy/xy+y²的值 已知x-3y=0,且xy不等于0,求分式x*2-xy+y*2/x*2+xy+y*2的值 已知x平方+2xy-8y平方=0(y不等于0),求x-y/x+y的值 xy不等于0,且3x平方-2xy-8y平方=0,求x/y得值