Factoring Ep.1: Guideline to Factoring - 6:34

KEY CONCEPTS:

First step to factoring, is to find a common factor.

After that, regardless of whether there is a common factor or not is to count the number of terms.

Based on that will determine how to Factor

Polynomials Episode 10: Difference of Squares - 5:26

KEY CONCEPT:

(a-b)(a+b) = a^2-b^2

Since the middle terms equals zero, of the FOIL method all we need to do it the First and the Last.

**NOTE: we subtract the first squared value with the second.