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Q: Is the square root of 18 a real number?

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The square root of 18 is an irrational number because it cannot be expressed as a fraction.

No. √324 = 18 = 18/1 = a rational number.

The negative square root of 324 is -18.

The square root of 18 is 4.2426406871192851464050661726291.

5.8259

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It is neither because the square root of -18 is an imaginary number but the square root of 18 is irrational

The square root of 18 is an irrational number because it cannot be expressed as a fraction.

The square root of 648 is 18 times the square root of 2. 648 has no perfect square root.

The square root of (any number that isn't a perfect square) is irrational.

It is an irrational number which is 3 times square root 2

it is impossible to have a square root for a negative number. so your answer would be "not possible".

Yes

The square root of 18 is: ± 4.242641

The square root of 18 is about 4.24

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