I have a TI-84 plus without a cord to plug into my computer to download programs for it. I am looking for the code that I can input into the calculator in order to have the polyroot finder on my calculator.

Can you provide a link to the download? I may be able to help if so.

The best I can find when I google "polyroot finder ti84" is the third one down, on the site education.ti (I apparently can't post a link because I'm new). I don't need the Simultaneous Equation Solver, so don't worry about that.

I looked at what you referred me to, and that is an application created by Texas Instruments that can only be downloaded to the calculator, and would appear under "Apps" instead of "prgm". I'm afraid that I don't know how to create a program that can replicate that.

There might be other ones, but i have not had much success in finding them. I'm not sure if I could find it, if you can please look, it would be greatly appreciated.

You could also use the solve( function to find the roots of a polynomial, but given the inefficiency of it, you're better off just graphing the function and finding the X-coordinates where the graph touches the X-Axis. If I were you, I would just get a link cord and TI Connect so I could download the Polynomial Root Finder from Texas Instruments. Any program that's been created will probably be just as inefficient as solve(, so I don't think they're worth your time and effort.

Alright thank you

Another way to find the roots of a polynomial on a TI-84 is to graph the function, and then find the coordinates where the graph crosses the X-Axis.

You could also use Source Coder to open the file if you end up finding one.