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Of course, not only can it be a real number but it is a real number. When you take the square root times itself, the result is a number that is real.

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Q: Can a number with a square root be a real number?
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Related questions

What is the real number root of -25?

There is no real number [square] root of a negative number. There is a real cube root and a real fiftth root etc, but root, by itself, implies square root.


Is the square root of 7 a real number?

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The square root of 0 is 0, which is a real number.


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The square root of any positive real number (as in this case) is a real number. (Such square roots are usually irrational.)The square root of a negative real number, such as the square root of -15, is an imaginary, and therefore also a complex, number.


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