A perfect square is an integer multiplied by itself. The common example is sixteen, four is multiplied by itself. You will be given two or more perfect squares and asked to factor the entire lot. The best thing you can do is break these down into FOIL problems. FOIL stand for First, Outer, Inner, Last. First stands for multiplying the first set of terms in the binomial. Outer stands for multiplying the outer most terms. Then you will find the product of the inner most terms. Last stands for taking the product of the terms that occur last in each binomial. Students will use the distributive property, and may need to change operational signs.

These worksheets explain how to factor the difference of two perfect squares. The following activity sheets will give your students practice in factoring the difference between two perfect squares, including variables.