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OpenStudy (anonymous):
square root of -400
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OpenStudy (anonymous):
20 i
OpenStudy (anonymous):
\[\sqrt{-400} = i\sqrt{400} = 20i\]
OpenStudy (anonymous):
20 i (complex number)
OpenStudy (anonymous):
what does the i mean?
OpenStudy (anonymous):
i is an imaginary unit
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OpenStudy (anonymous):
such that i^2 = -1
OpenStudy (anonymous):
i is a complex number !!!!
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