Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Appendix A - A.5 - The Quadratic Formula and Square Root Properties - Exercises - Page 562: 27


$x = -2.65~~$ or $~~x = 2.65$

Work Step by Step

We can write the general form of the square roots property: If $x^2 = a$ where $a \geq 0$, then $x = \pm \sqrt{a}$ We can solve the incomplete quadratic equation: $2x^2 = 14$ $x^2 = 7$ $x = \pm \sqrt{7}$ $x = -2.65~~$ or $~~x = 2.65$
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