Answer
$6$
Work Step by Step
Using complex math, we find:
$(3-4i)+\overline{3-4i}=(3-4i)+(3+4i)=3+3-3i+4i=6$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 1 - Section 1.3 - Complex Numbers; Quadratic Equations in the Complex Number System - 1.3 Assess Your Understanding - Page 112: 83
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