College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 3 - Section 3.3 - Properties of Function - 3.3 Assess Your Understanding - Page 236: 89

Answer

$2x+h+2$

Work Step by Step

$\frac{f(x+h)-f(x)}{h}=\frac{(x+h)^2+2(x+h)-(x^2+2x)}{h}=\frac{x^2+2xh+h^2+2x+2h-x^2-2x}{h}=\frac{2xh+h^2+2h}{h}=2x+h+2$
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