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Twelve thirds is equal to 4. The square root of 4 is 2, and since twelve thirds is equal to 4, the square root of twelve thirds is also equal to 4, which is 2.
The square root of 4 is 2 which is a rational number
No because it is 2 times the square root of 21 which is an irrational numberThe square root of 84 is not a rational number
Yes, because the answer is 3/2 which is a rational number.
And exponent of -2 represents the square root