Answer
$3x^3+19x^2+43x+35$.
Work Step by Step
The given expression is
$=3x(x^2+4x+5)+7(x^2+4x+5)$
Clear the parentheses.
$=3x^3+12x^2+15x+7x^2+28x+35$
Add like terms.
$=3x^3+19x^2+43x+35$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Section 5.1 - Introduction to Polynomials and Polynomial Functions - Exercise Set - Page 327: 110
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