Question

Why Do Numbers Have Both A Positive And A Negative Square Root?

Answer 1

Observe:\[\bf 25 = (5)^2=(-5)^2 \implies \sqrt{25} = \pm 5\]The same applies for any perfect square.

Answer 2

Actually the same applies for any square, not just perfect squares..

Answer 3

that doesnt explain why??? right thats just an example

Answer 4

just asking why they have positive and negative