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OpenStudy (anonymous):
simplify your answer SR of -20 answer must be typed in form of a+bi
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OpenStudy (anonymous):
-20=4*5*-1 2iSR(5)\[2i \sqrt{5}\]
OpenStudy (anonymous):
\[\sqrt{-20}=\sqrt{-1*4*5}=\sqrt{-1}*\sqrt{4}*\sqrt{5}=i*2*\sqrt{5}\]
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