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Slav-nsk [51]
3 years ago
7

Rewrite square root of -49 -4 in complex number notation please help

Mathematics
1 answer:
SVEN [57.7K]3 years ago
4 0

Note that if i^2=-1 than i=\sqrt{-1},

Also note that \sqrt{ab}=\sqrt{a}\sqrt{b}

So we have,

\sqrt{-49}=\sqrt{-1}\sqrt{49}=\boxed{7i}

and,

\sqrt{-4}=\sqrt{-1}\sqrt{4}=\boxed{2i}

Hope this helps.

r3t40

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