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# \$1.00Descartes' Rule

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Which of the following is the conclusion you can draw using Descartes' Rule of Signs applied to 2x^4 - 6x^3 + x^2 + 7x - 4

A. Zero is not a root: There are either 1 or 3 positive real roots. There is 1 negative real root. There are either 0 or 2 complex roots

B. Zero is not a root: There are either 1 or 3 positive real roots. There are 3 neagtive real roots. No information is avaliable about the number of complex roots

C. Zero is not a root: There are either 1 or 3 positive real roots. There are 3 neagtive real roots. There are either 0 or 2 complex roots

D. Zero is not a root: There are either 1 or 3 positive real roots. There is 1 negative real root. No information is avaliable about the number of complex roots

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• Posted on Jun. 12, 2012 at 06:38:55AM
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• Posted on Jun. 12, 2012 at 06:42:23AM
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