Find the focus of the parabola x2−4x−8y+12=0x^2 - 4x - 8y + 12 = 0x2−4x−8y+12=0.
(2,2)(2, 2)(2,2)
(2,3)(2, 3)(2,3)
(0,2)(0, 2)(0,2)
(2,1)(2, 1)(2,1)