**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?**