Let's try a messier one:

Find the real zeros of

then draw a rough sketch of the graph. 

Well, it sure looks creepy...  but, it isn't!  First of all, if we multiplied this mess out, the leading term would be

So, his basis shape is  

Let's find the zeros...

Set

and solve...

real zeros: -5, -2, 3, 7

Draw it!

*Remember, this is just a rough sketch!

Hey!  Why don't you check this on the graphing calculator?

If you'd multiply him all out, he'd be

So, you'll enter him as

x^4-3x^3-39x^2+47x+210

But, there's one more thing we need to do...

It turns out that this guy is REALLY tall!

Go ahead and hit the		button to graph him and you'll see
what I mean.

To get the full picture, let's change the settings at the bottom of the calculator...  See them?  Set them to:

Cool, huh?

Continued on the next page