Q: What number is 13 the square root of?

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It is both.13 is the square of +/- 3.6056, approx. However, since it is not the square of an integer, it is not a perfect square.It is also the square root of 169.

169

If the square root of a number is irrational, it is its own conjugate. sqrt(13)*sqrt(13) = 13 and you no longer have an irrational!

The square root of 13 is irrational. All square roots of whole numbers are irrational unless the number is a perfect square.

For a number to be a perfect square, the number's square root has to be a whole number. 9 is a perfect square because its square root is a whole number, 3. If the square root of the number is a decimal, then it is not a perfect square. For example, 13 does not divide evenly so it not a perfect square.

Related questions

The square root of 169 is 13 which is a rational and also a Prime number

It is both.13 is the square of +/- 3.6056, approx. However, since it is not the square of an integer, it is not a perfect square.It is also the square root of 169.

169

No.

If the square root of a number is irrational, it is its own conjugate. sqrt(13)*sqrt(13) = 13 and you no longer have an irrational!

Yes, the square root of 168 is a rational number. It's 13.

No. The square root of a positive integer is either a whole number or it is irrational.

Yes, because the square root of 169 is 13 which is a rational number

It can't be simplified because the square root of 13 is an irrational number that can not be expressed as a fraction

The square root of the number 169, is 13 because when 13 is multiplied by itself, it results to 169.

The square root of 13 is irrational. All square roots of whole numbers are irrational unless the number is a perfect square.

Yes.