The Equation Editor

The Equation Editor allows you to include mathematical equations within your discussion posts and email correspondence

Within a Discussion topic, select Start New Thread at the top of your screen to begin a new post, or select a previous post and then select Reply. The HTML Editor will open.
Select Show All Components. You will see a variety of formatting, structure and content tools here.
Select the arrow to the right of the Equation icon, and choose Graphical equation, MathML equation, or LaTeX equation icon, depending on which type of equation you want to insert.

Follow these steps to write an equation:

Enter your expressions and/or equations in the editing box. Note: Take advantage of the different templates provided on the different tabs to build the equations and insert fractions, exponents, and other mathematical elements.
Once you are done writing your equation or expression, select Insert.

$Use the tabs along the top of the window to insert fractions, exponents, and other mathematical equations$

Select the equation you wish to edit.
Choose one of the Insert Equation icons. The Equation Editor will load in a new window.
Make the needed changes and select Insert.
Select Save to update your changes on your post.