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81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational Numbers cannot be expressed as a fraction.
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Earn +20 ptsQ: Is -81 is rational or irrational?
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Is -81 an irrational number?
No, -81 is not an irrational number because it can be represented in the form x/y = -81
Is sqrt 81 a irrational number?
No because the square root of 81 is 9 which is a rational number
Is a rational plus an irrational equals a rational?
No. A rational plus an irrational is always an irrational.
Is -131 rational or irrational?
rational
Is the sum of a rational and irrational number rational or irrational?
It is always irrational.
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