## Lesson goal: Simplify an expression

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Factor a polynomial
If you've done the other lessons in this section, hopefully you've seen how
the computer can do symbolic math.

In this lesson, let's write a simple computer algebra system, that asks you
for an expression, then simplifies it for you.

#### Now you try. Try typing in just about any expression you can find in your algebra book, and see what you get.

Type your code here:

This example will simplify the problem you type into the text box when the code is run.