The square root of 8 is the positive real number that, when multiplied by itself, gives the natural number 8. It is more precisely called the principal square root of 8, to distinguish it from the negative number with the same property.
The square root of 8 is the positive real number that, when multiplied by itself, gives the natural number 8. It is more precisely called the principal square root of 8, to distinguish it from the negative number with the same property.
Source: Wikipedia "Square root of 8" · CC BY-SA 4.0
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