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Define a square root. |
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Answer» In mathematics, a square root of a number X is a number y such that Y2 = x; in other words, a number y whose square(the result of multiplying the number by itself, or y ⋅ y) is x. ... For example, the principal square root of 9 is 3, which is denoted by √9 = 3, because 32 = 3 ⋅ 3 = 9 and 3 is NONNEGATIVE. |
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