The square root of 8 is an irrational number because it cannot be represented as a fraction of two integers.
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It is an irrational number
The square root of 64 is 8 which is a rational number
It is a rational number because the square root of 64 is 8 which is a rational number
Sometimes it is and sometimes it isn't. The square root of 2 and the square root of 3 are both irrational, as is their product, the square root of 6. The square root of 2 and the square root of 8 are both irrational, but their product, the square root of 16, is rational (in fact, it equals 4).
the square root of 3, the square root of 5, the square root of 6, the square root of 7, the square root of 8 etc