Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 4 - Section 4.3 - Polynomial Functions, Graphs, and Composition - 4.3 Exercises - Page 294: 11


a. 8, b. 74

Work Step by Step

We are given the function $f(x)=5x^{4}-3x^{2}+6$. In order to find the specified values, we can plug the values into the function and solve. a. $f(-1)= 5(-1)^{4}-3(-1)^{2}+6=(5\times1)-(3\times1)+6=(5)-(3)+6=5-3+6=8$ b. $f(2)= 5(2)^{4}-3(2)^{2}+6=(5\times16)-(3\times4)+6=(80)-(12)+6=80-12+6=74$
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