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Q: Is 2 square root rational

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

Yes, it is the principal square root of 4, and it is rational.

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 which is a rational number

Yes because the square root of 4 is 2 which is a rational number

The square root of 2 is an irrational number

No. Lots of square roots are not rational. Only the square roots of perfect square numbers are rational. So for example, the square root of 2 is not rational and the square root of 4 is rational.

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.

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

If the positive square root (for example, square root of 2) is irrational, then the corresponding negative square root (for example, minus square root of 2) is also irrational.

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

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