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Pre-Calculus - Using Descartes rule of signs

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Uploaded on Oct 11, 2011

This video shows how to use Descartes rule of signs to determine the number of possible positive and negative zeros. Remember that this comes from looking at the sign changes, but that it can actually be less that that, by an even number. For more videos, please visit http://www.mysecretmathtutor.com

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