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Q: Is 7 squared a rational number?

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7 squared = 49 which is a rational number because it can be expressed as a fraction in the form of 49/1

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

No, it is not.

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

Yep, any rational number squared is also rational.

Yes, 225 squared is a rational number.

20 squared is 400 which is a rational number

The square root of 5 squared is 5, which is a rational number.

28 squared is 784 which is a rational number

Rational.

Rational.

It is a rational number as 9

All integers are rational numbers.

The square of any rational number is also rational.

No because 102 squared is 10404 which is a rational number

The square of any rational number is also rational.

Yes

Yes.

Yes

4/25 squared is 16/625 = 0.0256 . That's a perfectly rational number.

Yes, because 6 squared = 36 which is a rational number

No because 25 is a rational number

7 is a rational number and it is also a prime number

Yes.

Any number that can be written as a fraction is rational -- therefore, 4/9 squared is rational (it can still be written as a fraction even if you multiply it by itself).