Answer
$s=2\sqrt 3+5$ or $s=-2\sqrt 3+5$
Work Step by Step
$s^2-10s+13=0$
$s^2-10s+25-12=0$
$(s-5)^2=12$
$s-5= \pm 2\sqrt 3$
$s-5=2\sqrt 3$ or $s-5=-2\sqrt 3$
$s=2\sqrt 3+5$ or $s=-2\sqrt 3+5$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 9 - Quadratic Functions and Equations - 9-6 The Quadratic Formula and the Discriminant - Practice and Problem-Solving Exercises - Page 588: 55
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