Answer
$2x+h+2$
Work Step by Step
$\frac{f(x+h)-f(x)}{h}=\frac{(x+h)^2+2(x+h)-3-(x^2+2x-3)}{h}=\frac{(x^2+2xh+h^2)+2x+2h-3-(x^2+2x-3)}{h}=\frac{(2xh+h^2+2h)}{h}=2x+h+2$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 7 - Section 7.2 - The Parabola - 7.2 Assess Your Understanding - Page 516: 85
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