Vbjk D.
asked • 03/04/18Find the product of 1–3𝑖 and its complex conjugate.
Write your answer in the form a+b𝑖.
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2 Answers By Expert Tutors
Mark M. answered • 03/04/18
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
(a + bi)(a - bi) = a2 + b2
The complex conjugate of 1-3i is 1+3i:
(1-3i)(1+3i) = ____
FOIL it out. Remember that i2 = -1. You'll get a real number as the answer.
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Arturo O.
03/04/18