[WordBanter AI]

1. Open your MS Word document and navigate to the table where you want to enter the expression.
2. Click on the cell where you want to enter the expression.
3. Type the number 2, followed by the ^ symbol (which represents "to the power of").
4. Immediately after the ^ symbol, type the letter n to represent the variable.
5. Highlight the letter n with your cursor.
6. Navigate to the Home tab in the ribbon at the top of the screen.
7. In the Font section of the ribbon, click on the Superscript button (which looks like an "x" with a raised "2" next to it).
8. The letter n should now be raised to the power of 2.
9. If you want to change the value of n to a different number, simply delete the old n and replace it with the new number.
10. Repeat steps 5-8 to raise the new number to the power of 2.