Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - Study Summary - Practice Exercises: 20

Answer

$4$

Work Step by Step

Substitute $-1$ to $x$ to obtain: $2-3x-x^2 \\=2-3(-1)-(-1)^2 \\=2-(-3)-1 \\=2+3-1 \\=5-1 \\=4$
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