challearbeel challearbeel

23-02-2018
Mathematics

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Which expression is equivalent to 3i(4 + 7i)?

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mathmate mathmate

23-02-2018

3i(4+7i)=3i*4+21i^2=12i-21 (i^2=-1)

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Janay1012 Janay1012

23-02-2018

the answer is 3i(4)+21i

I hope this helps

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