Hey Allie, don't get too frustrated. Have you taken a look at the Quick LaTeX Guide? There are a few examples there that you should try to mimic. In general, any mathematical notation is of the form
[[$ insert LaTeX equation here $]]
Between the dollar signs is where you place specific $\LaTeX$ commands for whatever math symbol(s) you want. All $$\LaTeX$ commands begin with the \-symbol. For example, if you wanted to typeset "square root of x squared plus y squared", you would type the following in the page editor.
[[$\sqrt{x^2+y^2}$]]
The result of the above is code is:
$\sqrt{x^2+y^2}$
Also, notice that when you are in the page editor, among the many buttons above the text box are two labelled $\sqrt{x}$ and $x/2$, respectively. The first of these inserts initial code for a mathematical expression or equation that you want to display on its own line and centered. The second button inserts the initial code for an inline mathematical expression. Using these buttons can save you a bit of typing.
Just try it out and see what happens. The beauty of the wiki is that you can go back and fix and/or edit things at any later date. It doesn't have to be perfect on the first go. Let me know if you have more questions.
