Answer
$a^2b^2-c^2$
Work Step by Step
RECALL:
$(x+y)(x-y) = x^2-y^2$
Use the formula above to have:
$(ab+c)(ab-c)
\\=(ab)^2 - c^2
\\=a^2b^2-c^2$
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 10.4 - Special Products - Exercise - Page 352: 18
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