1. Use the formula editor in word. If you have installed it completely, there is a formula editor in word. For a typical installation, there is no formula editor. If so, open Insert, Object Formula Editor 3.0, and then enter it here. 2.

Insert a symbol, or you can use Insert- a special symbol to find it. 3. Intelligent ABC uses V4; Sogou input method uses ctrl+shift+z, and then watch.