Answer
$-40-42i$
Work Step by Step
$(3-7i)^{2}=(3-7i)(3-7i)=3^{2}-2(3)(7i)+(7i)^{2}=3^{2}-2(3)(7i)+7^2*-1=-40-42i$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises - Page 131: 36
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