Answer
$-1, \frac{5}{4}$
Work Step by Step
$4x^2-x-5=0$,
$(4x-5)(x+1)=0$,
$x=-1, \frac{5}{4}$
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 6 - Analytic Trigonometry - Section 6.3 Trigonometric Equations - 6.3 Assess Your Understanding - Page 487: 3
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