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Square Roots and Real Numbers are these a natural number, a whole number, an integer, rational, or irrational? how do I find out?

Mathematics
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An irrational number is any real number that cannot exist as a ratio and/or fraction. The square root of 2 is an irrational number because it is not a perfect square. -64 is a rational square root (number) because of -8.
However, if the negative sign was inside of the square root, the answer would be a complex number. Ex: 8i

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Other answers:

A real number is a value that represents a quantity continuously. Ex: -5, 8, 4/3, 3.14159265, and even irrational numbers. Natural numbers include all the basic counting numbers, except negatives.

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