Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 6 - Test - Page 406: 20


$P\left( -2 \right)=91$

Work Step by Step

Substituting $x$ with $ -2 $ in the given polynomial equation, $P(x)=4x^4+7x^2-2x-5,$ then, \begin{array}{l}\require{cancel} P\left( -2 \right)=4(-2)^4+7(-2)^2-2(-2)-5 \\\\ P\left( -2 \right)=4(16)+7(4)-2(-2)-5 \\\\ P\left( -2 \right)=64+28+4-5 \\\\ P\left( -2 \right)=91 .\end{array}
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