Answer
$\frac{1+5\sqrt 5}{2}, \frac{1-5\sqrt 5}{2}$
Work Step by Step
$x^2-x-22=27^\frac{2}{3}=9$
$x^2-x-31=0$
Using the discriminant formula :
x = $\frac{1+5\sqrt 5}{2}$ or $ \frac{1-5\sqrt 5}{2}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.6 - Other Types of Equations - 1.6 Exercises - Page 128: 48
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