Answer
$3$
Work Step by Step
We are given that $f(x)=2x^2-x$
Plug in $-1$ for $x$ to obtain:
$f(-1)=2(-1)^2-(-1) \\ =2+1 \\=3$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 3 - Polynomial and Rational Functions - Section 3.2 The Real Zeros of a Polynomial Function - 3.2 Assess Your Understanding - Page 223: 1
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