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OpenStudy (anonymous):
check please?! write the product in standard form: (1+3i)(5-i) is it 5+17i?!
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OpenStudy (anonymous):
3i^2+16i+5
OpenStudy (anonymous):
Use the FOIL method and multiply it as you would any two binomials; however, remember that \[i^2 = -1\].
OpenStudy (anonymous):
so would it be -3i+16i+5? @ridoleor
OpenStudy (anonymous):
I got 8 + 14i. Are you FOILing correctly?
OpenStudy (anonymous):
probably! thank you so much for your help! @ridoleor
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OpenStudy (anonymous):
probably not***
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