This week in Pre-Calc we re-visited factors and learned about solving quadratic equations. With quadratic equations, the equation must equal zero to proceed. If it does not initially equal zero you MUST make it equal zero. The easiest ones to do are the difference of squares and the hardest ones are the ugly ones.

This is an equation that had to be changed to zero, because it didn’t originally start out as equalling zero. Once changed there were zero pairs turning the trinomial into a binomial. Then you had to find something common, then determine the X’s