kristagato1018 kristagato1018

02-10-2016
Mathematics

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Find the product of the complex number and it's conjugate.

9-5i

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Patronus1619 Patronus1619

02-10-2016

conjugate of 9-5i is 9+5i
product of those two: (9-5i)*(9+5i) = [tex] 9^{2} - (5i)^{2} =81-25* i^{2} =81-25*(-1)=81+25=106[/tex]

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