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OpenStudy (anonymous):
(−5 + 3i) • (1 − 2i) PLEASE someone explain this to me?
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OpenStudy (sweetburger):
is i considered \[\sqrt{-1}\]
OpenStudy (anonymous):
yes, i'm supposed to simplify
OpenStudy (math&ing001):
Did you distribute (a+b)(c+d)=ac+ad+bc+bd If yes tell me where you're stuck.
OpenStudy (sweetburger):
foil method
OpenStudy (math&ing001):
(-5+3i)(1-2i) =-5+10i+3i-6i*i i*i=-1 =-5+13i+6 =1+13i
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