### Home > A2C > Chapter 9 > Lesson 9.3.2 > Problem 9-140

9-140.

Carlo was trying to factor the polynomial and find all of its roots. He had already found one factor by making a guess and trying it, so he had

*. He was trying to factor*

*, and he had tried*

*You should look at the graph*.”

How does the graph help?

It shows us that

Complete the problem.

Divide by

*.*

Use a multiplication rectangle to set it up.

Now use the quadratic formula to solve for .