Question 997373
How to complete the square is shown and described here:
<a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">Lesson on how to solve, but includes how to Complete the Square</a>


Once done and adjusted, the standard form equation will indicate the center  (h,k) and radius r
according to  {{{ (x-h)^2+(y-k)^2=r^2}}}.