Precalculus (6th Edition)

by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie

Published by Pearson

ISBN 10: 013421742X

ISBN 13: 978-0-13421-742-0

Chapter 3 - Polynomial and Rational Functions - 3.3 Zeros of Polynomial Functions - 3.3 Exercises - Page 338: 110

Answer

$\{2,2,2,2 \}$

Work Step by Step

Step 1. One can try $x=\pm 1,\pm2, ...$ with synthetic division, but this polynomial is actually $f(x)=(x-2)^4$ Step 2. Thus the zeros are $\{2,2,2,2 \}$

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