Ir a+bi 4 and abthen the vetue of a h – InterviewSolution

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1.	Ir a+bi 4 and abthen the vetue of a h
Answer» ab=-12a+b=4take square both the sidesa^2+2ab+b^2=16so a^2+b^2=16-2ab=16+24=40a^-2ab+b^2=(a-b)^240-2(-12)=40+24=64=8^2so a-b=8

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