Answer
$24a^2+84a+72$
Work Step by Step
We multiply each term of the first
polynomial by each term of the second polynomial. Then we add the products, as follows
$$
(4a + 8)(6a + 9)=4a (6a + 9)+ 8(6a + 9)\\
=24a^2+36a+48a+72=24a^2+84a+72
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.5 - Multiplication of Polynomials - Exercise - Page 226: 47
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