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Q: Is the square root of negative 4 irrational or not real number?

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Neither. All irrational numbers are real numbers.Using the real number system you can't take the square root of a negative number, but if you're dealing with imaginary numbers then the square root of negative 3 is the square root of 3i

The square root of negative 36 is an imaginary number and therefore not an irrational number. For a number to be irrational it must first be real.

No. The square root of negative one is an example of an imaginary (not real) number. Pi is irrational, but real.

No, it is not even a real number. It is an imaginary number.

All real numbers are irrational. For example, Pi is an irrational number that is a real number. Other irrational numbers can be the square root of an imperfect square.

The square root of any positive real number (as in this case) is a real number. (Such square roots are usually irrational.)The square root of a negative real number, such as the square root of -15, is an imaginary, and therefore also a complex, number.

The square root of 8 is irrational and real.

It is a real number, a rational number, an integer.

The square root of any negative number is not even a 'real' number. It's called 'imaginary', because there's no number you can multiply by itself to get a negative number. The square root of 101 is irrational.

Yes, square of 2 is a real number. Real numbers fall into 2 categories, Rational and Irrational. Square of 2 is an irrational number.

The square root of any positive, non-square number will be both real and irrational.

It is a real but an irrational number

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