Question

How do you simplify `sqrt(-196)`?

Answer 1

`sqrt(−196)` = `14i`

Explanation:

As we need to take square roots of a negative number, we should use imaginary number `i` such that `i^2=-1`.

Hence `sqrt(−196)` can be expressed `sqrt((-1)*14*14)` i.e.

`14sqrt(-1)` i.e. `14i`.

Hence `sqrt(−196)` = `14i`