Square Root of 36

Question

What is the square root of 36

Answer 1

There are two square roots of 36: 6 and -6

Answer 2

The square root of 36 is 6, because 36=6*6.  (Radical Sign)36=6, never be -6.  The radical sign always means the positive square root, so that (-)(Radical Sign)36=-6.  This rule(?) may be an axiom sort of I guess.

The square roots of 36 are +6 and -6, because 36=-6*-6 as well.

And don't say "the cube roots of 27 are ..." in plural form, because the cube root of 27 is 3 only, never be -3.