Find the center and radius of the circle x2 + (y+8) 2=4

Answer: Center (0, - 8) and Radius = 2

The standard equation of a circle is (x-h) ² + (y-k) ² = r² where (h, k) is the center and r is the radius.

You can write the equation as (x-0) ² + (y - (-8)) ² = 2². From this, you can conclude that the center is (0,-8) and the radius is 2.