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

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

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