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Mathematics 19 Online
OpenStudy (anonymous):

3√-8

OpenStudy (anonymous):

6√2 ?

OpenStudy (unklerhaukus):

\[3\sqrt{-8}=3\times\sqrt{8}\times\sqrt{-1}\]

OpenStudy (unklerhaukus):

\[\sqrt{8}=\sqrt4\times\sqrt2=2\sqrt{2}\]

OpenStudy (unklerhaukus):

\[\sqrt{-1}=i\]

OpenStudy (anonymous):

What is i?

OpenStudy (anonymous):

= 6i

OpenStudy (unklerhaukus):

\[i=\sqrt{-1}\]

OpenStudy (anonymous):

oh I see.

OpenStudy (unklerhaukus):

\[3\sqrt{-8}=6\sqrt2i\]

OpenStudy (anonymous):

ok.

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