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square root
noun
- a quantity of which a given quantity is the square:
The quantities +6 and −6 are square roots of 36 since (+6)×(+6)=36 and (−6)×(−6)=36.
square root
noun
- a number or quantity that when multiplied by itself gives a given number or quantity
2 is a square root of 4, usually written √4 or 41/2
square root
- A number that, when squared, yields a given number. For example, since 5 × 5 = 25, the square root of 25 (written √25) is 5.
square root
- A number that, when multiplied by itself, will result in a given number. The square root of four is two; the square root of one hundred is ten.
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Notes
The square roots of many numbers, such as three, are irrational numbers .
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Word History and Origins
Origin of square root1
First recorded in 1550–60
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