Answer
-1
Work Step by Step
Any non-zero base to the power of zero is equal to one. However, this base is only the nine, the negative sign is not included in the bases unless indicated by parentheses.
$-9^{0}=-(9^{0})=-1$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.2 - Page 33: 10
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