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No. 2.25 = 1.5^2 is a non-perfect square but it is rational.

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Why is a non-perfect square irrational?

The question is based on a total misunderstanding. For example, 5 is a non-perfect square but 5 is not irrational!


Are non perfect squares irrational?

No. 2.25 is not a perfect square but it is rational.


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You get an irrational number as the square root.


Is the square root of 21 irrational?

Yes, the square root of 21 is irrational. This is because 21 is not a perfect square, and the square root of any non-perfect square is irrational. Additionally, the square root of 21 cannot be expressed as a fraction of two integers.


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Sometimes the square root of a positive number can be irrational, as in the square root of 2 (which is a non-perfect square number), but sometimes it is a rational number, as in the square root of 25 (which is a perfect square number).


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Is the square root of 34 is rational or irrational?

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