What is a square root?
110226
How can I find the square root using pen and paper?
105737
Computing limits which involve square roots, such as $\sqrt{n^2+n}-n$
110661
When does $\sqrt{a b} = \sqrt{a} \sqrt{b}$?
10774
Why $f(x) = \sqrt{x}$ is a function?
82630
How is it, that $\sqrt{x^2}$ is not $ x$, but $|x|$?
97952
Square root of 1 is (not) -1
49750
Proof of the square root inequality $2\sqrt{n+1}-2\sqrt{n}<\frac{1}{\sqrt{n}}<2\sqrt{n}-2\sqrt{n-1}$
60261
Is $\sqrt{x^2}=|x|$ or $=x$? Isn't $(x^2)^\frac12=x?$
7898
Finding square root without using sqrt function?
6582
Prove the existence of the square root of $2$.
36664
How is the square root function implemented?
3955
Square roots -- positive and negative
61324
Finding the "square root" of a permutation
33184
Something strange about $\sqrt{ 4+ \sqrt{ 4 + \sqrt{ 4-x}}}=x$ and its friends
94843
What is the Taylor series of a square root?
7415
why only square root approach to check number is prime
144042
On the functional square root of $x^2+1$