Quadratic Formula by Factoring ti-84 Program?

The quadratic formula for an equation y = ax^2 + bx + c is

.......-b +/- sqrt(b^2 - 4ac)

x = -------------------------------

.................2a

I should point out that my book on the TI 83+ spends 10 pages explaining how to enter this program.

If I were you I'd try to find a free version and download it.

I can't find any mention of the TI-84 but I did find the TI-84+ version for you:

http://wiki.answers.com/Q/How_do_you_program_the_q...

Good luck :)

.

One possible version of a quadratic formula program's source code is as follows:

:Prompt A,B,C

:Pause (-B+{1,-1}√(B²+4ACi²))/(2A►Frac

Both Prompt and Pause can be found in the [Prgm] menu when you're editing the program.

Did you check TI's website? They might have one.