Answer
$(2m-3)(2m+3)$
Work Step by Step
This is a difference between two squares, and hence
$$
4m^2-9=(2m-3)(2m+3)
.$$
One can check as follows
$$
(2m-3)(2m+3)=4m^2-6m+6m-9=4m^2-9
.$$
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 10.5 - Finding Factors of Special Products - Exercise - Page 354: 33
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