Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 11 - Section 11.1 - Solving Quadratic Equations by Completing the Square - Exercise Set: 86


$\sqrt 13$

Work Step by Step

$a = 1, b=-3, c=-1$ $\sqrt {b^2-4ac}$ =$ \sqrt {(-3)^2 - (4\times1\times-1)}$ =$\sqrt {9-(-4)}$ =$\sqrt {9+4}$ =$\sqrt 13$ =$\sqrt 13$
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