Answer
$3$.
Work Step by Step
The given expression is
$=-2x^2-4x+3$
Substitute $-2$ for $x$.
$=-2(-2)^2-4(-2)+3$
Evaluate the power.
$=-2(4)-4(-2)+3$
Multiply.
$=-8+8+3$
Add.
$=-8+11$
Subtract.
$=3$.
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: 9
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