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Q: Is 28 squared rational or irrational?

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Rational; 62 = 36. Any rational number that is squared is still rational.

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20 squared is 400 which is a rational number

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-90 squared is rational - it is +8100. All perfect squares are not only rational but they are integers.

They are rational.

It is a rational number as 9

No, it is rational.

Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.

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

Is the square root of 28 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.

No because pi still remains as an irrational when squared.

No because 102 squared is 10404 which is a rational number

The square of any rational number is also rational.

No, it is rational.

irrational

No.

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No because 7 squared equals 49 which is a rational number but the square root of 7 is an irrational number

4.6 is rational.

The square of any rational number is also rational.

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No because 25 is a rational number