2. 已知圆O′:(x−1)2+y2=36O\prime :(x-1)^{2}+y^{2}=36O′:(x−1)2+y2=36,点A(−1,0)A(-1,0)A(−1,0),MMM是圆上任意一点,线段AMAMAM的中垂线lll和直线O′MO\prime MO′M相交于点QQQ,则点QQQ的轨迹方程为((( )))