Answer
$1$
Work Step by Step
(i) $a^0=1, a\ne 0$
Use rule (i) to find:
$(-9)^0=1$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 5 - Number Theory and the Real Number System - 5.6 Exponents and Scientific Notation - Exercise Set 5.6 - Page 320: 16
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