### Home > CCG > Chapter 3 > Lesson 3.1.2 > Problem 3-21

3-21.

Multiply the expressions below. Then simplify if possible.

Multiply both terms inside the parentheses by

.

Use a generic rectangle to multiply every term in the first binomial with every term in the second binomial.

Before simplifying, you should have

terms (see above).

See the hint for part (b).

It doesn't matter what order you multiply in. Try adding brackets so you don't get confused.