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Mathematics 14 Online
OpenStudy (anonymous):

Medal!! Simplify (3+2i)(4-i) and explain to me?

OpenStudy (anonymous):

3*4-3i+8i+2=14+5i

OpenStudy (anonymous):

So you foiled?

OpenStudy (anonymous):

foiled what? what means foiled?

OpenStudy (anonymous):

You multiplied the two equations, FOIL (first, outside, inside, last)

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

Thanks much.

OpenStudy (bibby):

In general it's better to understand it as distributing/multiplying

OpenStudy (bibby):

for example multiply this (5x^2+2x+7)(9x+3) can't foil that

OpenStudy (anonymous):

Okay, then for example how would I do that?

OpenStudy (bibby):

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