Answer
-21
Work Step by Step
Given -$x^{2}$ + 4, x = 5
Now put the value of x=5 in the given expression
=-$(5)^{2}$ + 4
=-25+4
=-21
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 6 - Algebra: Equations and Inequalities - 6.1 Algebraic Expressions and Formulas - Exercise Set 6.1 - Page 347: 9
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