Answer
$-1, \frac{5}{4}$
Work Step by Step
Given $4x^2-x-5=0$, we have $(4x-5)(x+1)=0$ which gives $x=-1, \frac{5}{4}$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 7 - Analytic Trigonometry - 7.3 Trigonometric Equations - 7.3 Assess Your Understanding - Page 465: 3
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