Question

Which of the following is the correct notation for the complex number

Answer 1

1-4i

Explanation:

`i=√(-1)`

We have
`1-√(-16)`.

Let's look at the
`√(-16)` part.

Since it has a negative inside the square root, it is imaginary. This is our imaginary unit
`i=√(-1)`.

So
`√(-16)`

`=√(16) i`

`=4i`

So
`1-√(-16)=1-4i`