# Interactive video lesson plan for: Advanced Factoring - MathHelp.com - 1000+ Online Math Lessons

#### Activity overview:

For a complete lesson on advanced factoring, go to http://www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn that the last step in some factoring problems is to factor the difference of two squares. For example, the trinomial x^4 + 2x^2 -- 3 factors as (x^2 + 3)(x^2 -- 1), and as a last step, since the binomial (x^2 -- 1) represents the difference of two squares, it factors as (x + 1)(x -- 1), so the final answer is (x^2 + 3)(x + 1)(x -- 1).

Tagged under: factoring,completely,factor,gcf,greatest,common,difference,squares

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