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

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Q: Is 2 a rational square root?
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Related questions

Is square root of 4 rational?

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


Is the square root of 25 a rational number?

The square root of 25 is 5 ... rational.


Is the square root of 4 irrational or rational?

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


Are all square roots rational numbers?

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.


Is the square root of 4 a rational or irrational number?

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A short note on square root of 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.


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And exponent of -2 represents the square root


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The square root of 2 is an irrational number


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yes its a rational number because the square root of 4 is 2 and 2 can be put over 1


Are negative square roots rational or irrational?

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.


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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.


Is the square root of 4 rational?

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


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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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Is root 2 a rational number?

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.


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[ square root of (4.1) ] is irrational. But [ square root of (4) ] is rational.


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The square root of 12 is not a rational number. In fact, it is a radical number. It's simplified form would be 2 multiplied by the square root of 3.


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is the square root of 3 rational


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