Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 11 - Polynomial and Rational Functions - 11.3 The Short-Run Behavior of Plynomials - Exercises and Problems for Section 11.3 - Exercises and Problems - Page 455: 5



Work Step by Step

Factoring the equation (as necessary) and setting the factors equal to zero, we find: $$4x\left(2x^2-x-15\right) \\ 4x\left(2x+5\right)\left(x-3\right) \\ x=0,\:x=-\frac{5}{2},\:x=3$$
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