Begin with the program by clearing the home screen and adding inputs for the three coefficients. You can program your TI-8384 to solve quadratic equations and this page shows you the procedure. Quadratic Formula for the TI-83 and 84.
Look at the first picture and put that on your calculator.
The program below solves a quadratic equation whether it has real roots or not. PRGM IO Prompt press ENTER type. How to Make a Quadratic Formula Program on a TI-84 Plus Getting Started With Your Quadratic Formula TI-84 Program. Once in here click on Create New.