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Q: Is the square root 81 rational or irrational?
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Is the square root of -81 rational or irrational?

The square root of -81 is an imaginary number, specifically 9i, where i represents the imaginary unit equal to the square root of -1. Since the square root of -81 does not result in a real number, it is considered irrational. Rational numbers are those that can be expressed as a ratio of two integers, whereas irrational numbers cannot be expressed in this form.


Is the root of 81 an irrational number?

No. The square root of 81 is 9, which is a rational number.


Is the square root of of 81 over negative three irrational?

No. The square root of 81/(-3) is rational. The square root of [81/(-3)] is imaginary (a kind of complex number).


Is sqrt 81 a irrational number?

No because the square root of 81 is 9 which is a rational number


Is 81 a irrational number?

No. 81 is a rational number. An irrational number is a number with an endless amount of digits like pi or the square root of 2.


Is the square of 81 a rational number?

The square root of 81 is 9 which is a rational number


Is the square root of 81 irrational?

no. it is 9


Is the square root of 81 an irrational number?

No


Is the square root of 81 rational?

Yes. The square root of 81 is 9 - a natural number and all natural numbers are rational numbers.


Is the square root of 81a rational number?

Yes. The square root of 81 is 9, which is a rational number.


Is -81 is rational or irrational?

81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Which type of number is square root of 81?

Integer, rational, and real.