Question

How do you take the square root of a negative number?

Answer 1

use the imaginary number:
`√(-1)` = i

`√(-20)`

`√((-1)*2*2*5)`

2×i
`√(5)`

2i
`√(5)`

another example:

`√(-4)`

`√((-1)*2*2)`

2 × i

2i

Answer 2

It is not possible to take the square root of a negative number, but you can use imaginary numbers

square root of -16= 4i