Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 11 - Quadratic Functions and Equations - Connecting: The Concepts - Exercises - Page 712: 2


$x=11$ or $x=-11$

Work Step by Step

$ x^{2}=121\qquad$... use the principle of square roots: For any real number $k$ , if $x^{2}=k$ , then $x=\sqrt{k}$ or $x=-\sqrt{k}$ $ x=\pm 11\qquad$... the symbol $\pm$ indicates two solutions. $x=11$ or $x=-11$
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