Factor Polynomials with Complex Numbers

This video continues the topic of factoring polynomials with complex numbers.

An example problem is analyzed that works through factoring a fourth degree polynomial into linear factors and we need to determine the mistake. Problems where a mistake needs to be found are useful since they help students find mistakes in their own work.

Factoring a difference of squares, factoring a sum of squares, and factoring fourth degree polynomials with substitution are all techniques needed to understand the approach to this problem.

Khan Academy exercise to practice:

[nickh.]

Thank you for fully explaining the problem! i am in calc 3 and forgot how to do this because I have not used it in so long.