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 1 - Introduction to Algebraic Expressions - 1.8 Exponential Notation and Order of Operations - 1.8 Exercise Set - Page 66: 32

Answer

$-1$

Work Step by Step

The given expression, $ (-1)^7 $, simplifies to \begin{array}{l} (-1)(-1)(-1)(-1)(-1)(-1)(-1) \\\\= [(-1)(-1)][(-1)(-1)][(-1)(-1)](-1) \\\\= 1\cdot1\cdot1\cdot(-1) \\\\= -1 .\end{array}
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