"Completing the Square" method is one of the technique used to solve quadratic equations. It is among the more difficult to grasp in concept. What it applies is the concept of similar factorisation, (a + B) 2.
The "Completing the Square" method of solving quadratic equation is demonstrated here. Through this video, any steps missed out can be replayed.
Make full advantage of this video to master this method as it is a sure way to solve ANY quadratic equations.