1. The FOIL method is used to multiply two binomial expressions. It stands for First, Outer, Inner, Last. You multiply the first terms, outer terms, inner terms, and last terms and add the results.
2. FOIL is demonstrated by multiplying out 10 example binomial expressions like (2x + 5)(3x + 5).
3. The key steps are to identify the first, outer, inner, and last terms in each expression and multiply them out according to FOIL, then combine like terms.