Virtual Nerd: Use the Formula for the Product of a Sum and a Difference

Multiply two binomials that have the same terms but different signs. One way is to FOIL it and then combine like terms. Another, shorter way to do it is to use a formula. There's a formula for the product of a sum and a difference. Using...

There is a shortcut formula for finding the product of a sum and a difference. Use the formula rather than FOILing out the monomials. Fewer steps mean fewer headaches in math.

This tutorial illustrates how to use the formula for the square of a sum when factoring. [1:47]

In this tutorial, you'll see how to use the formula for inverse variation to find the constant of inverse variation and then solve for your answer. [2:34]

Review how to use the product of powers rule to simplify an expression. This tutorial will walk you through the process and show you examples. [3:22]

Review your understanding of the power of a product rule before the SAT. This video will give you an explanation along with examples. [4:40]

Students learn about the special product rule for Product of the Sum and Difference of Two Terms, which is useful for understanding polynomial identities. Includes short multiple-choice quiz. [3:30]

Use the formula for the square of a difference when you're factoring and this tutorial shows you how. [1:52]

Learn the formula to find the slope of a line by watching this tutorial. [1:41]

The Difference Between Two Squares is an algebraic expression where two terms are perfect squares and one is negative. In this clip the Algebra teacher uses the FOIL method to factor a difference between two squares and prove the equation.