Answer
$n^2-8n+5$.
Work Step by Step
The given polynomial is
$=(2n^2-5n-6)+(-n^2-3n+11)$
Clear the parentheses.
$=2n^2-5n-6-n^2-3n+11$
Group like terms.
$=2n^2-n^2-5n-3n-6+11$
Combine like terms.
$=n^2-8n+5$.
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 7 - Polynomial Equations and Factoring - 7.1 - Adding and Subtracting Polynomials - Exercises - Page 362: 25
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