Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Section 8.5 - Quadratic Functions and Their Graphs - Exercise Set: 56



Work Step by Step

To create a perfect square trinomial you take the coefficient of x, divide it by two, and square the results. OR $(\frac{b}{2})^{2}$. In this problem $b=4$. So $(\frac{4}{2})^{2}=(2)^{2}=4$.
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