Answer
$-64$
Work Step by Step
Note that $-x^2$ means "the negative of $x^2$."
Thus, the given expression means
$-(8^2)$
Simplifying gives:
$=-(8 \cdot 8)
\\=-64$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set - Page 27: 62
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