If you dont see what you want click on Insert New Equation at the bottom. Spaces is an important part of Math AutoCorrect shortcut. To do this click inside the last cell in the fourth column click on Layout in the ribbon and then click on Formula at the far right.
The ribbon is the horizontal menu between your document title and the.
To add your own equation do one of the following. If you dont see what you want click on Insert New Equation at the bottom. Word and click the Insert tab then you see the corner of the. The ribbon is the horizontal menu between your document title and the.