Question

What is the square root of -1?

Answer 1

square root of -1 = i

Explanation:

the imaginary Unit number is a solution to the quadratic equation x^{2}+1=0. basically any number times itself is a positive number or zero so you can't ever get to a negative number by squaring. Since square roots undo squaring, negative numbers can't have square roots.

Answer 2

If you work with real numbers then the square root of - 1 CANNOT be defined.

If you work with complex numbers then the square root of - 1 is equal to the imaginary unit(which is symbolized as i)