Observation by Advanc-Ed: we showed an example of an application of solving a quadratic equation that can't be factored. First, we approximated the values using Geogebra (relating solving the equation to finding x-intercepts or "zeros"), then we solved it algebraically (using the Quadratic Formula). Jackson used the graphing calculator to approximate the zeros created from the formula. There was also discussion about the sign of the leading coefficient and its effect on the graph (is it facing up? or facing down?).