Algebra 1: Common Core (15th Edition)

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

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 $s=-2\sqrt 3+5$
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