Square root of rational nos

Square root of a rational number

The positive square root of the rational expression. [y^3 - 1/(y^3) - 3 (y - 1/y)] div (y - 1/y) is

Are the square roots of all positive integers irrational? If not,give an example of the square root of a number that is a rational number.

Property 3 The square root of an even square number is even and that square root of an odd square number is odd.

The square of an irrational number is always a rational number

Numbers to remember (Square and square root of a real number )

Square root of a perfect square by prime factorization