Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 10 - Quadratic Equations - 10.4 - Solving Quadratic Equations - Which Method? - Concept Quiz 10.4 - Page 457: 4

Answer

Completing the square.

Work Step by Step

While there are other posibilites, this equation involves the $x^2$ term and the $x$ term being set equal to a constant, which is a great situation for completing the square. Additionally, half of 6 squared is 9, and this is a good number to work with when completing the square.
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