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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.

Square root - Wikipedia

en.wikipedia.org/wiki/Square_root

In mathematics, a square root of a number a is a number y such that y<sup>2</sup> = a; in other words, a number y whose square is a. For example, 4 and −4 are square ...

Understanding square roots | Square roots | Exponents, radicals ...

www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-square-roots/v/understanding-square-roots

Learn how square root means what number multiplied by itself will result in the given number.

Understanding square roots | Radicals | Expressions with rational ...

www.khanacademy.org/math/algebra/rational-exponents-and-radicals/alg1-radicals/v/understanding-square-roots

Learn how square root means what number multiplied by itself will result in the given number.

Square Roots

squarerootsgrow.com/

Square Roots is an urban farming accelerator—powered by human ingenuity, technology, and a deep love for local, real food.

Numbers - Square Roots - First Glance - Math.com

www.math.com/school/subject1/lessons/S1U1L9GL.html

Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. The perfect ...

Square Root Calculator - Math.com

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

The Square Root Calculator will find the square root of the number you enter. ... Related Topic How to calculate square roots without a calculator ...

Numbers - Square Roots - In Depth - Math.com

www.math.com/school/subject1/lessons/S1U1L9DP.html

Squaring, which we learned about in a previous lesson (exponents), has an inverse too, called "finding the square root." Remember, the square of a number is ...

Squares and Square Roots - Math is Fun

www.mathsisfun.com/square-root.html

"Squared" is often written as a little 2 like this: square root of 9 is 3. This says "4 Squared equals 16" (the little 2 says the number appears twice in multiplying) ...

Square Roots: Introduction and Simplification - Purplemath

www.purplemath.com/modules/radicals.htm

Introduces the square root. Covers basic terminology and demonstrates how to simplify terms containing square roots.