Algebra 1

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

Answer

21

Work Step by Step

$(-5)^{2}-(0.5)^{-2}$ $25-(\frac{1}{.25})$ $25-4$ $21$
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