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www.ask.com/math/square-root-8113ac8a03c80413

A

The square root of a number, x, is the number that equals x when multiplied by itself.

The square root of 4 is 2, since 2 multiplied by itself equals 4.

en.wikipedia.org/wiki/Square_root

In mathematics, a

www.math.com/students/calculators/source/square-root.htm

The

math.about.com/od/squareroots/Square_Roots.htm

www.khanacademy.org/math/algebra-basics/core-algebra-foundations/square-roots-for-college/v/understanding-square-roots

Understanding

www.mathsisfun.com/square-root.html

"Squared" is often written as a little 2 like this:

www.purplemath.com/modules/radicals.htm

Introduces the

squarerootnola.com/

mathworld.wolfram.com/SquareRoot.html

In common usage, unless otherwise specified, "the"

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