The Quadratic Formula No One Taught You

We derive an alternative version of the quadratic formula, then explore advantages and disadvantages of each version. This includes values for which they are defined, and the effect of rounding on the accuracy of solutions. 00:00 Intro 00:19 Derivation 1 02:29 Derivation 2 04:55 Problems with the original formula 07:40 Problems with the new formula 11:31 Comparison of accuracy 14:17 Why you should use both