Deriving the Quadratic Formula

Let's talk quadratic formula.

To derive the quadratic formula, you start with the quadratic equation and apply the steps of completing the square. First, I will review the steps of solving a quadratic equation using completing the square. Second, I will apply the steps of completing the square method to the quadratic equation.

First, the steps for "completing the square" method to solve a quadratic equation.

1. Divide every term by the coefficient of x² unless its one
2. Isolate all variable terms on one side
3. Add both sides by half of coefficient of x squared.
4. Factor the trinomial and write as a square.
5. Apply the square root property
6. Then solve for x.

Second, I will now apply the steps to solving the quadratic equation, ax²+bx+c=0.

I think this is more interesting than me singing the quadratic formula as Batman, but you be the judge. Here's the link: https://www.youtube.com/watch?v=rToBuXiYX74

If you got math questions, e-mail at jdmathguy@gmail.com.