A square is made up of two of the same factors.
These factors can be positive or negative.
Each one is therefore a root of the square.
Example: 2*2 =4 and -2*-2 = 4
Both 2 and -2 are square roots of 4.
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It is: 25
a=2.44948974278 is approximately equal to the square root of 6, and so answers your question approximately. An approximate answer is the best you can do, because the square root of six is irrational (cannot be written as a common fraction). The exact answer is symbolized by a square root sign followed by a six.
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No, the square root of an integer will not always be an integer. It may or may not be. The square root of nine is three, both of which are integers. The square root of two is not an integer. In fact, it is not even a rational number.