Answer
$6x^2+5x-56$
Work Step by Step
FOIL means you combine the first term from each expression, the inside terms, the outside terms and the last terms.
$6x^2+21x-16x-56=6x^2+5x-56$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Section 10.2 - Finding the Product of Two Binomials Mentally - Exercise - Page 347: 37
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