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5:32
Khan Academy
Sal Khan,Monterey Institute for Technology and Education
Multiplying complex numbers
Discover how to multiply complex numbers! Just like multiplying regular numbers, you can use the distributive property or FOIL method. Remember, the imaginary unit 'i' squared equals -1. So, when you multiply complex numbers like 1-3i and 2+5i, you get a new complex number: 17-i.
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