In this lesson, we review factoring by grouping for polynomials with four terms and more complex quadratics. The method of grouping involves grouping the first two terms and the last two terms, factoring each group separately using the greatest common factor, and then factoring out what's in common. We also learn a trick method for finding the fourth term in a quadratic before using grouping. This is the third method covered in this lesson, along with greatest common factor and simple quadratics. Stay tuned for special cases in the next lesson.
A review of factoring polynomials by grouping.