## Algebra 1

Published by Prentice Hall

# Chapter 9 - Quadratic Functions and Equations - 9-3 Solving Quadratic Equations - Practice and Problem-Solving Exercises - Page 551: 38

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#### Work Step by Step

$c^{2}-18=9$ $c^{2}=27$ Now you can take the square root and you will get a positive and negative number as the answers. Both of them are solutions.

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