Is the Square Root of a Real Number both positive and negative?
3955
Square roots -- positive and negative
119429
Why do $x^{x^{x^{\dots}}}=2$ and $x^{x^{x^{\dots}}}=4$ have the same positive root $\sqrt 2$?
71566
Positive and negative complex numbers?
103014
Is the real number structure unique?
102138
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
115296
Under what conditions does a matrix $A$ have a square root?
132525
Real Numbers Raised to Imaginary Powers?
152831
When does a complex matrix have a square root?
13656
Prove existence of a real root.
84558
Prove that the square root of a positive integer is either an integer or irrational
150624
Why does the square root of a square involve the plus-minus sign?
106716
The sum of square roots of non-perfect squares is never integer
17886
Values of square roots
122737
How to understand why $x^0 = 1$, where $x$ is any real number?
17542
Why is $\sqrt{-x}*\sqrt{-x}=-x?$
82462
Square Root Algorithm
72892
Does $\sqrt{x}$ have a limit for $x \to 0$?