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OpenStudy (anonymous):
simplify the number using the imaginary unit i square root - 28
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OpenStudy (anonymous):
\[\sqrt{-28}=\sqrt{28}.\sqrt{-1}=\sqrt{4}\sqrt{7} (i)=2\sqrt{7}i\]
OpenStudy (anonymous):
@MtMtx thanks!! but thats not a choice
OpenStudy (anonymous):
it is. Its the last one
OpenStudy (anonymous):
my answer is the same as the last one on your list\[2i \sqrt{7}\]
OpenStudy (anonymous):
thanks!
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OpenStudy (anonymous):
hey @myko <3 ;) hehe
OpenStudy (anonymous):
:)
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