## Algebra 1: Common Core (15th Edition)

Published by Prentice Hall

# Chapter 9 - Quadratic Functions and Equations - Mid-Chapter Quiz - Page 575: 15

#### Answer

The equation has two solutions, $r=\pm 6$.

#### Work Step by Step

$5r^2-180=0$ $r^2-36=0$ $(r-6)(r+6)=0$ $r=\pm 6$ The equation has two solutions, $r=\pm 6$.

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