About This Lesson
http://www.freemathvideos.com In this video tutorial I show you how to find the value of a number that completes the square. We do this by taking b which is the coefficient of the linear term in a quadratic and dividing it by two and then squaring. By doing this when then create a perfect square trinomial which can be written as a square binomial. This will become important for solving and also writing in vertex form.
