Four Ways to Factor a Quadratic Trinomial That You Probably Don’t Know In this video, we discussed four ways of factoring a quadratic trinomial when the value of a is not 1. The four methods are: (1) AC + grouping (2) Lazy AC (3) Slide and Divide, and (4) Tic-tac-toe. Quadratic trinomials are polynomials with three terms that can be rewritten in a factored form consisting of two binomial factors, which will give the solutions to the quadratic equation. Today, we will learn how to find those two binomials that are factors of the given quadratic trinomials when the leading coefficient, a, is not equal to 1.