Answer
$8x^2-2x-2$.
Work Step by Step
The given polynomial is
$=(x^2-x-2)+(7x^2-x)$
Clear the parentheses.
$=x^2-x-2+7x^2-x$
Group like terms.
$=x^2+7x^2-x-x-2$
Combine like terms.
$=8x^2-2x-2$.
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 - Monitoring Progress - Page 361: 9
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