Answers

2014-11-16T12:18:04+08:00
 a square root of a number a is a number y such that y2 = a, in other words, a number y whose square (the result of multiplying the number by itself, or y × y) is a. For example, 4 and −4 are square roots of 16 because 42 = (−4)2 = 16.
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2014-11-16T15:37:02+08:00
a number that produces a specified quantity when multiplied by itself.
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