Answer
3
Work Step by Step
$f(x)=2x^2-x$
Substitute $-1$ to $x$ to obtain:
$f(-1)=2(-1)^2-(-1)=3$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 4 - Polynomial and Rational Functions - 4.5 The Real Zeros of a Polynomial Function - 4.5 Assess Your Understanding - Page 232: 1
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