The TI-89, TI-92 Plus, and Voyage 200 offer two built-in functions for easily factoring expressions and trinomials/polynomials into their component parts. This tutorial explains when to use these functions and how to use them to solve simple equations and polynomials.

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**2014.01.05:**Just posted a new tutorial on plotting parametric functions on the TI-83+ and TI-84+. Hope you find it useful!**2013.05.05:**We posted a new video tutorial on using variables to perform calculations on your graphing calculator. Watch it!**2013.04.08:**Check out our great new guide on learning the HP 50g and its RPN option.**2013.03.23:**Just posted a quick guide to entering logarithms on your calculator.-
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