About python my problem

Question

3**2=(-3)**2=9,but 9**(1/2)=only 3 why not -3

Answer 1

the square root of a negative number exists, it's a complex number!

but 9**(1/2) =|3| which cannot be - 3

Answer 2

Root function is only the positive value.
Mathematicians decided so.

Answer 3

Because we never get the value for square root in minus. If you know math well then you should know.