How do I make math symbols on the computer?

Go to ALT Codes – Alt Codes for Maths / Mathematics for a full list of alternative keyboard codes to display characters.Or use Microsoft Equation in Microsoft Office Products:In Microsoft Office, click where you want to insert the equation.Go to Insert–> Object –>Create NewIn the box, scroll to select Microsoft Equation 3.0. Click OK.Build the equation by selecting symbols from the Equation toolbar and by typing variables and numbers. From the top row of the Equation toolbar, you can choose from more than 150 mathematical symbols. From the bottom row, you can choose from a variety of templates or frameworks that contain symbols such as fractions, integrals, and summations.