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Past paper question on complex numbers

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#1
LikeA'13OSS

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The two complex numbers Z1=a/(1+i) Z2=b/(1-2i) where a,b are real such tha Z1+Z2=3
Find a and b
This is the question
thanks for your time

#2
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When I say:
Re(z1+z2) I mean the real part of the sum z1+z2
and Im(z1+z2) the imaginary

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#3
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Next time please post on this thread your questions: http://www.ibsurviva...slstudies-help/