Ellipse (x-2)²/9 + (y+1)²/4 = 1. Center, vertices, foci?
Center (2,-1), vertices (2±3,-1) and (2,-1±2), foci (2±√5,-1)
Center (2,1), vertices (2±2,1) and (2,1±3), foci (2,1±√5)
Center (-2,1), vertices (-2±3,1), foci (-2,-1)
Center (2,-1), vertices (2,-1), foci (2,-1)