Answer
$3x^2+6x+10$.
Work Step by Step
The given polynomial is
$=(x^2+6x-5)+(2x^2+15)$
Clear the parentheses.
$=x^2+6x-5+2x^2+15$
Group like terms.
$=x^2+2x^2+6x-5+15$
Combine like terms.
$=3x^2+6x+10$.
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 - Chapter Review - Page 410: 6
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