Most people who would actually make use of this program probably have a TI calculator that you can write/download and install programs on to it, no offense. An example is that I myself already have a program for the Quadratic formula on my calculator.
Would just like to add that we aren't hating on you. There seems to be a large hatred for reinventing the wheel, but keep programming. Sometimes reinventing the wheel with your own twist is a great way to learn programming.