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Mathematics 11 Online
OpenStudy (anonymous):

simplify the number using the imaginary unit i.

OpenStudy (anonymous):

OpenStudy (math&ing001):

\[\sqrt{-16}=\sqrt{16*i ^{2}}=4i\]

OpenStudy (math&ing001):

Because \[-1=i ^{2}\]

OpenStudy (anonymous):

is that the answer?

OpenStudy (math&ing001):

4i is the answer

OpenStudy (anonymous):

thankyou so much

OpenStudy (math&ing001):

No problem ^^

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