Answer:
A rational number is a number that can be written as an integer over an integer.
The are square roots that are perfect squares.
They can be written as a fraction that terminates or repeats.
Explanation:
Integers are whole number and their opposites:
...-3, -2 -1 0 1 2 3....
is not a rational number because when it is written as a decimal, it does not repeat or terminate.
is a rational number because it is equal to 4. It is a perfect square.
is not a perfect square so it is not rational.