There are a few ways to delete programs on the Ti 84 Plus. The first way is to use the Ti 84 Plus’ software installation program. To do this, open the Ti 84 Plus’ software installation program and follow the prompts to install the software. The second way is to use the Ti 84 Plus’ uninstallation program. To do this, open the Ti 84 Plus’ uninstallation program and follow the prompts to uninstall the programs that you want to delete. The third way is to use a computer with a virus scanner and remove all of the programs that are installed on your Ti 84 Plus using this scanner.