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OpenStudy (anonymous):
Multiply the complex numbers (3+2i)(3-2i)
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OpenStudy (anonymous):
i believe it is 13
OpenStudy (anonymous):
using foil
OpenStudy (anonymous):
9-6i+6i-4(-1) = 9+4 = 13
OpenStudy (anonymous):
i^2 = (-1)*
OpenStudy (anonymous):
and that is it worked out
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