# Graphing Functions and Descartes' Rule of Signs

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1. Use Descartes` Rule of Signs to determine the possible number of positive real zeros of the function.

F(x)=3x cube-4x squared-2x-4

***************x squared +11x+28

2. Graph: f (x)= ------------------------

***************x squared +8x+16

****************3x squared -3x-1

3. Graph: f (x)= ------------------------

***************x squared -x-2

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