Question

Which of the following is irrational?

Answer 1

`√(2)`

A square root of any number that won't result in a whole number is irrational.

In this case,
`√(2)` is irrational.

Answer 2

`√(2)`

Explanation:

the other 3 are perfect squares and have rational answers.

`√(1.44) =1.2\\√(1)= 1\\√(4) =2`