Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Appendix A - Numbers, Inequalities, and Absolute Values - A Exercises - Page A9: 30


$(-\infty, (-1-\sqrt 5)/2)$ U $(-\infty, (-1+\sqrt 5)/2)$

Work Step by Step

Simplify Expression on one side $x^2+x-1>0$ Identify numbers by equating to zero $(-\infty, (-1+(-)\sqrt 5)/2)$ Assign a test value $(-\infty, (-1-\sqrt 5)/2)$ U $(-\infty, (-1+\sqrt 5)/2)$
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