Square root of a squared number: $\sqrt{a^2} = a \in \mathbb R$?
111432
Square root of a number squared is equal to the absolute value of that number
125069
Help with $\int \frac 1{\sqrt{a^2 - x^2}} \mathrm dx$
81890
What does $2^{\mathbb R}$ mean?
152831
When does a complex matrix have a square root?
1190
Square Root of Rational Number $\frac{A}{B}$
14633
What's the thing with $\sqrt{-1} = i$
40525
Fastest way to determine if an integer's square root is an integer
91101
Proving $\sqrt2$ is irrational
43453
Is ${\sqrt2^{\sqrt2^{\sqrt2^{\sqrt2^\sqrt2}}}}^{...}=4$ correct?
80772
What happens when square root is performed in inequalities?
68315
Why doesn't multiplying square roots of imaginary numbers follow $\sqrt{a} \times \sqrt{b} = \sqrt{ab}$?
1522
Is $\sqrt{64}$ considered $8$? or is it $8,-8$?
82630
How is it, that $\sqrt{x^2}$ is not $ x$, but $|x|$?
61324
Finding the "square root" of a permutation
23048
The ring $\mathbb Z[\sqrt{-2}]= \{a+b\sqrt{-2} ; a\in \mathbb Z,b\in \mathbb Z \}$ has a Euclidean algorithm
113481
Modular Arithmetic - Find the Square Root
113168
If $a > b$, is $a^2 > b^2$?