Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 2 - Section 2.5 - Zeros of Polynomial Functions - Exercise Set - Page 380: 96

Answer

$5$

Work Step by Step

The zero(s) on the right side touch the x-axis and turn around; because of the flatness of the curve near the zero, the degree of multiplicity is at least 4. Adding the one degree (zero) from the left side, we have a minimum degree of $4+1=5$.
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