### Home > INT3 > Chapter Ch1 > Lesson 1.2.2 > Problem 1-91

Multiply the expressions.

Use a generic rectangle to multiply.

In a rectangle, **2 by 2 square, left edge labeled, top, x, bottom, minus 1. Bottom edge labeled, left, x, right, + 1.**

**Added labels to interior: top left, x squared, top right, 1, x, bottom left, 1, x, bottom right, negative 1.**

The total area of the generic rectangle, or .

First, multiply

and .Then use a generic rectangle to multiply that result by . **2 by 2 square, left edge labeled, top, 2, x squared, bottom, + 2, x, Bottom edge labeled, left, x, right, + 1.****Added labels to interior: top left, 2, x to the third, top right, 2, x squared, bottom left, 2, x squared, bottom right, 2, x.**

Now use a generic rectangle.Find the

- and-intercepts of. The factors in part (c) should be useful.The

-intercepts are where.The

-intercept is where:from part (c). Using the Zero Product Property: