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Mathematics
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a+bi form (4+2i)(-3-5i)
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do you know how to do FOIL?
yes but after that is when i get lost
alright what do you get when you FOIL
-12-20i-6i-10i^2
ok do you have multiple choice
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no
ok from here combine like terms -10i^2-26i-12
got it
-2-26i ?
wait -10 wont stay
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yes
i^2=-1
add 10 to -12 -26i-2 a+bi firm -2i-26
-2-26i*
thanks
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