### Home > APCALC > Chapter 3 > Lesson 3.3.3 > Problem 3-122

3-122.

Determine all values of * *where

*given*

Since is cubic,

*will be quadratic. Predict how many solutions there will be to*

*.*

The blue curve shows intersecting the dotted line

*. Do your solutions look correct?*

Use the Power rule to find .

Set , and solve for

*.*

Use the eTool below to explore the graph of *f*(*x*).

Click the link at right for the full version of the eTool: Calc 3-122 HW eTool