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Mathematics 11 Online
OpenStudy (anonymous):

check please?! write the product in standard form: (1+3i)(5-i) is it 5+17i?!

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

OpenStudy (anonymous):

probably not***

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