Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 10 - Quadratic Equations - 10.1 - Quadratic Equations - Problem Set 10.1: 22

Answer

{$-\frac{2}{9},\frac{2}{9}$}

Work Step by Step

Using Property 10.1, which states that for any non-negative real number $a$, $x^{2}=a$ can be written as $x=\pm\sqrt a$, we obtain: $x^{2}=\frac{4}{81}$ $x=\pm\sqrt {\frac{4}{81}}$ $x=\pm \frac{2}{9}$ The solution set is {$-\frac{2}{9},\frac{2}{9}$}.
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