. Recall that an equation of a circle can be written in the form (zh)2 + (y-k)² = r2, where (h, k) is the center and r is the radius. Expanding terms, the equation can also be written in the form x2 + y² + Ax+By+ C = 0. a. Find an equation of the form x2 + y2 + Ax+By+C =0 that represents the circle that passes through the three points (4, -4), (2, -8), and (-5, -1). b. Find the center and radius of the circle