### Home > CCA2 > Chapter 4 > Lesson 4.1.2 > Problem 4-22

4-22.

Solve

Graph and

*.*

What part of the points of intersection will make this equation true?

Are there any -values in the original equation?

Another way to do this is to expand

so it is equal to

Now you can graph and

*. What part of the graph are*

you looking at now?

Use the eTool below to solve the equation graphically.

Click the link at right for the full version of the eTool: *4-22 HW eTool*