Answer
$-11$.
Work Step by Step
The given expression is
$=-x^2+4x+1$
Substitute $-2$ for $x$.
$=-(-2)^2+4(-2)+1$
Evaluate the power.
$=-(4)+4(-2)+1$
Multiply.
$=-4-8+1$
Add.
$=-12+1$
Subtract.
$=-11$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 8 - Graphing Quadratic Functions - Maintaining Mathematical Proficiency - Page 417: 7
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