### Home > INT2 > Chapter 3 > Lesson 3.1.5 > Problem 3-56

3-56.

Multiply the expressions in parts (a) and (b). Solve the equations in parts (c) and (d).

Use a rectangular area model.

It may help to rewrite this expression as

.

Begin by multiplying. The

-terms can be removed by subtracting them from both sides of the equation.

Rewrite as

.