By A Mystery Man Writer
Absolute value - Wikipedia
File:Academ existence of square root of 2.svg - Wikipedia
Square root - Wikipedia
File:Invent square root of 5.svg - Wikipedia
How to Calculate Cube Root by Hand (with Pictures) - wikiHow
Fast inverse square root - Wikipedia
How to Calculate a Square Root by Hand (with Pictures) - wikiHow
File:Tangent-sum square root.png - Wikipedia
Imaginary unit - Wikipedia
Imaginary unit - Wikipedia
File:Square-root Radix.svg - Wikimedia Commons
6 Amazing Algorithms to Get the Square Root (and Any Root) of any
Root mean square - Wikipedia