-90 squared is rational - it is +8100. All perfect squares are not only rational but they are integers.
4.6 is rational.
10.01 is a rational number
Rational
is 34.54 and irrational or rational. number
Rational
Rational.
No
If x is rational the it is rational. If x is irrational then it is irrational.
Rational. Rational. Rational. Rational.
rational
No. A rational plus an irrational is always an irrational.