Question

What’s the square root of negitive 64

Answer 1

The square root of -64 is -8.

How?

-8 x 8 = -64.

wait thats wrong there

its 8i

Answer 2

± 8i

Explanation:

note that
`√(-1)` = i

using the rule of radicals

•
`√(a)` ×
`√(b)` ⇔
`√(ab)`, hence

`√(-64)`

= ±
`√(64(-1))`

= ±
`√(64)` ×
`√(-1)` = ± 8i