Posted by **Hannah** on Thursday, August 20, 2009 at 1:23pm.

x^3 + 4x^2 + 14x + 20

use the root or zero feature of a graphing utility to approximate the zeros of the function accurate to three decimal places.

I do not know how to use the root or zero feature on my calculator. If someone could just explain how to do it that would be great.

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