X 2 - 4 x - 5 0. After the main Word-to-LaTeX windows appears just press the new Convert button again and wait a few seconds. There are multiple equations in the drop-down list then scroll down and select one of them to meet your actual needs.
EquatIO digital math can only be inserted to and extracted from Microsoft Word.
Math mode can be overkill for simple symbols and formulas. Open the Symbols menu as described above. Word-to-LaTeX Tab in MS Word. To obtain the math environment click on Equation on the Insert ribbon on Windows or Word for Mac 16 or in Document Elements on Word for Mac 11.