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Earn +20 ptsQ: Is the square root of 21 irrational?
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Is the square root of 21 an irrational or a rational number?
irrational
Is the square root of 5 and squa re root of 21 irrational?
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
Is the square root of 28 irrational or rational?
irrational
Is the square root of 84 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
Is the square root of 21 a real number?
Yes, albeit an irrational number
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