Question

Dunno these answers

Answer 1

its 9

Explanation:

Answer 2

c. 9i.

Explanation:

`√(-81)`

=
`√(-1 * 9 * 9)`

=
`√(-1 * 9^2)`

=
`9√(-1)`

The square root of -1 is the same thing as i.

=
`9i`

So, your answer is C.

Hope this helps!