Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 Quadratic Functions and Factoring - 4.7 Complete the Square - 4.7 Exercises - Quiz for Lessons 4.5-4.7 - Page 291: 5


$s=\pm i\sqrt{3}$

Work Step by Step

$ s^{2}+12=9\qquad$ ...add $-12$ to each side of the expression. $ s^{2}=-3\qquad$ ...take square roots of each side. $ s=\pm\sqrt{-3}\qquad$ ...write in terms of $i$. $s=\pm i\sqrt{3}$
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