Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 9 - Quadratic Functions and Equations - 9-5 Completing the Square - Got It? - Page 577: 1



Work Step by Step

The value of $b$ is 2. The term to add to $x^2+20x$ is $(\frac{20}{2})^2=100$. So $c=100$
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