Answer
21
Work Step by Step
$(-5)^{2}-(0.5)^{-2}$
$25-(\frac{1}{.25})$
$25-4$
$21$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 7 - Exponents and Exponential Functions - 7-1 Zero and Negative Exponents - Practice and Problem-Solving Exercises - Page 419: 67
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