How to solve cubic equations (by factoring, by grouping, rational zero theorem, & synthetic division

This precalculus lesson shows 4 examples of solving cubic polynomial equations. We will find all the real and complex solutions by using various methods, including factoring the difference of two cubes, factoring by grouping, the rational zero theorem (i.e., the rational root theorem), and synthetic division. Subscribe to ‪@ProfChow‬ for more math tutorials like this! 0:00 Solve x^3-8=0 4:10 Solve x^3-x^2-18=0 12:03 Solve 2x^3+5x^2+18x+45=0 15:25 Solve 2x^3-5x^2+7x-4=0 ------------------------- As a community college math professor since 2012, I understand the challenges students face in various math classes. This channel provides clear and step-by-step explanations to help you succeed in your math class. #math #precalculus #professorchow Support this channel on Patreon:   / profchow