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The square root of 2 is irrational. In general, the square root of a positive integer is either an integer (if you take the square root of a perfect square), or it is irrational.

Q: Is root 2 a rational number?

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The square root of 4 is 2 which is a rational number

no it is an irrational 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

The square root of 2, for example, is irrational.sqrt(2)*sqrt(2) = 2 which is rational.

Root 2 is appx. 1.414 and root 3 is appx. 1.732. There are many rational number between that. For instance: 1.5, 1.6, etc.

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It is rational. The root of a perfect square, such as 4, is rational; the root of any positive integer that is not a perfect square is an irrational number.

The square root of 4 is 2. 2 is a rational number so they square root of 4 is rational.

The square root of 4 is 2 which is a rational number

Yes, the square of any rational number is also a rational number.The square root of 2 is not a rational number.

Square root of a rational number may either be rational or irrational. For example 1/4 is a rational number whose square root is 1/2. Similarly, 4 is 4/1 which is rational and the square root is 2 which of course is also rational. However, 1/2 and 2 are rational, but their square roots are irrational. We can say the square root of a rational number is always a real number. We can also say the rational numbers whose square roots are also rational are perfect squares or fractions involving perfect squares.

No, they are not.

no it is an irrational number

Yes because 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

The square root of 2 is an irrational number

The square root of 2, for example, is irrational.sqrt(2)*sqrt(2) = 2 which is rational.

Root 2 is appx. 1.414 and root 3 is appx. 1.732. There are many rational number between that. For instance: 1.5, 1.6, etc.