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 - Page 766: 85

Answer

$5$

Work Step by Step

$a = 3, b=-1, c=-2$ $\sqrt {b^2-4ac}$ =$ \sqrt {(-1)^2 - (4\times3\times-2)}$ =$\sqrt {1-(-24)}$ =$\sqrt {1+24}$ =$\sqrt 25$ =$\sqrt{ 5^2}$ =$5$
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