College Algebra (10th Edition)

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

Chapter 3 - Section 3.1 - Functions - 3.1 Assess Your Understanding: 2



Work Step by Step

Substitute $-2$ to $x$ in the given expression to obtain: $3x^2-5x+\frac{1}{x} \\= 3(-2)^2 -5(-2) + \frac{1}{-2} \\=3(4) +10 - \frac{1}{2} \\=12+10-\frac{1}{2} \\=22-\frac{1}{2} \\=21\frac{1}{2}$
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