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For a start, the square root of any integer is either an integer, or an irrational number.

Q: How do you know if a square root is rational or irrational?

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They are +5 and -5, which are both rational.

The square root of 37 is an irrational number

The square root of 128 is an irrational number.

The square root of 155 is an irrational number.

Yes, because when x equals 1, the square root of x is rational and the square root of -x is irrational, and when x equals -1, the square root of x is irrational and the square root of -x is rational.

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