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square root

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square root

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Also known as 2nd root, second root, square root function, second root function, 2nd root function

inverse operation of square for finding the original base number; that base number itself

AI overview

A square root is the number that, when multiplied by itself, gives you the original number—for example, 3 is the square root of 9 because 3 × 3 = 9. Square roots matter because they let us reverse the squaring process and solve practical problems in areas like construction, engineering, and science where we need to find missing measurements.

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Wikidata facts

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Racine carrée bleue.svg
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Commons category
Square root
TeX string
\sqrt[2]{x}
Unicode character
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Notation for the (principal) square root of x. For example, √25 = 5, since 25 = 5 ⋅ 5, or 5 (5 squared).

In mathematics, a square root of a number x is a number y such that

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