Answer
$= -25$
Work Step by Step
We plug $x =-3$ and $y =-4 $ into the expression, $ -x^{2} - y^{2}$, to obtain:
$= -(-3)^{2} - (-4)^{2}$
$= -9 - 16$
$= -25$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 2 - Real Numbers - 2.4 - Exponents - Problem Set 2.4 - Page 76: 101
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