In the pop-up Insert Object dialog box, select New on the left, find Microsoft Formula 3.0 in the object type on the right, and click OK.

Select the required formula template in the pop-up formula editor, such as fraction and root, sum, integral, etc.

Take radical as an example, click radical template, select "square root" in the drop-down menu, and enter the corresponding value in the corresponding dotted box.

Close the formula editor and the edited formula will appear in the slide. You can adjust the size and position.