Question

Prove that √72 is irrational

Answer 1

The number 72 is a rational number if 72 can be expressed as a ratio, as in RATIOnal.

A quotient is the result you get when you divide one number by another number. For 72 to be a rational number, the quotient of two integers must equal 72.

In other words, for 72 to be a rational number, 72 must be able to be expressed as a ratio where both the numerator and the denominator are integers (whole numbers).

The number 72 can be expressed as 72/1 where 72 is the numerator and 1 is the denominator.

Thus, the answer to the question "Is 72 a rational number?" is YES.