Coupon Accepted Successfully!


FOIL Multiplication

You may recall from algebra that when multiplying two expressions you use the FOIL method: First, Outer, Inner, Last:

Simplifying the right side yields (x + y)(x + y) = x2 + 2xy + y2. For the product (xy)(xy) we get (xy)(xy) = x2 – 2xy + y2. These types of products occur often, so it is worthwhile to memorize the formulas. Nevertheless, you should still learn the FOIL method of multiplying because the formulas do not apply in all cases.
Examples (FOIL)




Test Your Skills Now!
Take a Quiz now
Reviewer Name