Question

Simplify the square root of -72. (Choices in comments.)

Answer 1

\[-6\sqrt{2}\]
\[6\sqrt{-2}\]
\[6\sqrt{2i}\]
\[6i \sqrt{2}\]

Answer 2

I believe it is
\[6i \sqrt{2}\]

Answer 3

hint: \[i^2 = -1\]

Answer 4

yes. you are correct

Answer 5

Thanks.

Answer 6

you are welcome:)