Answer
$s^2=169$
$s=13$
Work Step by Step
$s^2=169$
$\sqrt {169} = \sqrt {s^2}$
$s= 13, -13$
We can't have a negative sidelength, so $s=13$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 9 - Quadratic Functions and Equations - 9-3 Solving Quadratic Equations - Practice and Problem-Solving Exercises - Page 551: 32
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