Question

is the square root of -64 = -8?

Answer 1

\[\sqrt{-64^{?}}\] = -8 ?

Answer 2

\[\sqrt{-64} = \sqrt{64} \cdot \sqrt{-1}\]\[\sqrt{-1} = i\]

Answer 3

so its the answer -8i?

Answer 4

Just 8i

Answer 5

oh is it because of the (sqrt)-1 ?

Answer 6

Yes. We factor the negative one out to get i. Then we take the square root of a positive number.

Answer 7

great tytytytyty :)