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 - Vocabulary and Readiness Check: 5

Answer

9

Work Step by Step

To solve $x^2+6x=10$ by completing the square, our first step would be to take half of the coefficient of b, square it, and add it to both sides. $(\frac{1}{2}\cdot6)^2=9$ $x^2+6x+9=19$ Therefore, we would have to add 9.
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