Answer
$22a^3+11a^2+2a+1$
Work Step by Step
Using $(a+b)(c+d)=ac+ad+bc+bd$ or the FOIL Method, the expression, $
(11a^2+1)(2a+1)
$, is equivalent to
\begin{array}{l}
11a^2(2a)+11a^2(1)+1(2a)+1(1)
\\\\=
22a^3+11a^2+2a+1
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.4 - Multiplying Polynomials - Exercise Set - Page 289: 77
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