Roots of Quadratic Functions: Completing the Square and the Quadratic Formula.

Using the quadratic formula is the same as completing the square — on autopilot. Both methods always work. What makes that so, and what other information can we glean from these methods?

Illustrated article online: https://medium.com/mathadam/completing-the-square-a-visual-intuition-cb9a73384473

Sovereign by Kevin MacLeod Link: https://incompetech.filmmusic.io/song/4397-sovereign License: http://creativecommons.org/licenses/by/4.0/ ... https://www.youtube.com/watch?v=e_tOqo9D8IU