Wednesday, September 9, 2009 – Solving “Type 6″, Quadratic Equations, Part 3 (Formula)

This carries on our series on solving “type 6″ equations, the quadratic equation. This week we look at the quadratic formula, invented by Joe Quadratic. Please watch both the videos below, the first explains how to use the formula and the second goes through some typical errors made with quadratic equations.