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24-06-2018
Mathematics

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How do you evaluate radical -9 [tex] \sqrt{-9} how do you evaluate it [/tex]

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24-06-2018

[tex]i = \sqrt{-1} \implies i^2 = -1[/tex] ...
[tex]\sqrt{-9} \implies \sqrt{(9)(-1)} \implies \sqrt{9i^2} = 3 i[/tex]

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