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Mathematics 11 Online
OpenStudy (anonymous):

a+bi form (4+2i)(-3-5i)

OpenStudy (anonymous):

do you know how to do FOIL?

OpenStudy (anonymous):

yes but after that is when i get lost

OpenStudy (anonymous):

alright what do you get when you FOIL

OpenStudy (anonymous):

-12-20i-6i-10i^2

OpenStudy (anonymous):

ok do you have multiple choice

OpenStudy (anonymous):

no

OpenStudy (anonymous):

ok from here combine like terms -10i^2-26i-12

OpenStudy (anonymous):

got it

OpenStudy (anonymous):

-2-26i ?

OpenStudy (anonymous):

wait -10 wont stay

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

i^2=-1

OpenStudy (anonymous):

add 10 to -12 -26i-2 a+bi firm -2i-26

OpenStudy (anonymous):

-2-26i*

OpenStudy (anonymous):

thanks

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