Question

Using complete sentences, describe how you would analyze the zeros of the polynomial function f(x) = 7x5 + 15x4 – x3 + 4x2 – 6x – 11 using Descartes’ Rule of Signs. Be sure to provide the answer in your explanation.

Answer 1

http://en.wikipedia.org/wiki/Descartes_rule_of_signs

Answer 2

3 or 1 positive
2 or 0 negative

So 3 and 2
3,0 and 2 complex
1,2 and 2 complex
1,0 and 4 complex