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Q: Is the square root of -9 a rational irrational or not a real number?

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It is real and irrational.

Real numbers can be rational or irrational because they both form the number line.

Integers are rational. In the set of real numbers, every number is either rational or irrational; a number can't be both or neither.

Some square roots are rational, some are irrational (and some are not even real).

An irrational number.

Related questions

The square root of 8 is irrational and real.

They are irrational numbers.

It is real and 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 4 is a whole number, an integer, rational and real.

A real number which is not a rational number is an irrational number.

Real numbers can be rational or irrational because they both form the number line.

The square root of 8 over 25 is irrational, and real.

An irrational number is a real number that is not rational.

Neither. It is not a real number but an imaginary number.

No it cannot. Irrational means "not rational".

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

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