① If you haven't opened the math Input Panel before, we can open the Math Input Panel by clicking the Windows logo key and selecting All programs, accessories, math Input Panel.
② in Powepoint, click the Text Box button on the Insert tab, and click or drag a rectangular area on the slide to insert a text box.
③ opens the Math Input Panel, writes the formula, and the top white area shows the identified results. If the formula you want is different, you can modify it by using the Select and correct button on the right. If the formula you want is the same, click the Insert button at the bottom right to insert the formula into the text box in PowerPoint.