## Precalculus (10th Edition)

Published by Pearson

# Chapter 4 - Polynomial and Rational Functions - 4.5 The Real Zeros of a Polynomial Function - 4.5 Assess Your Understanding - Page 232: 1

3

#### Work Step by Step

$f(x)=2x^2-x$ Substitute $-1$ to $x$ to obtain: $f(-1)=2(-1)^2-(-1)=3$

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