Answer
$45x^2+x-28$
Work Step by Step
By using the FOIL method, we have
$$
(9x-7)(5x+4)=45x^2+(-35x+36x)-28=45x^2+x-28
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Test - Page 358: 6
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