Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 2 - Linear and Quadratic Functions - Chapter Review - Review Exercises - Page 185: 12

Answer

Zeros $=-\frac{1}{2}, 1$. x-intercepts $-\frac{1}{2}, 1$.

Work Step by Step

Step 1. Zeros $-2x^2+x+1=0 \longrightarrow 2x^2-x-1=0 \longrightarrow (2x+1)(x-1)=0 \longrightarrow x=-\frac{1}{2}, 1$. Step 2. The x-intercepts are the same as the zeros, that is $x=-\frac{1}{2}, 1$.
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