FOIL On Bigger Problems (trinomials)

These problems have more terms than basic FOIL, but the same principals apply. One: everything in the first parentheses has to get multiplied by everything in the other parentheses. Two: don't forget anyone! Once again, my patented "draw rainbows everywhere" technique should make it easier to remember. NOTE: Some or all of the problems in this video might be more advanced that what your class is doing, so if you start getting scared, hit stop!