To show how you factor a polynomial and find root values (values for x which make the equation equal zero).
Did a run through of what factoring is, why you do it, and how you do it. The last two vids wrap it up with working through example problems. I figure sometimes just the "lesson" (if you want to call it that, but I think that's taboo for Sophia) isn't enough. For me at least, examples are the best tool to learn.