# Thread: square root

1. ## square root

May I please know whether sqrt(0) is a surd? Thank-you!

2. Originally Posted by man
May I please know whether sqrt(0) is a surd? Thank-you!
given the definition of a "surd" ...

Surd -- from Wolfram MathWorld

I would say no.

3. Since $\mathbb Z \subset \mathbb Q'$ I would say yes but it is not exclusively a surd number.
Just like a square is also a rectangle, a parallelogram, etc.