Question

Select Rational, Irrational, or Cannot be determined to classify each expression.

Answer 1

Expression Result

x/y where x/y are integers and y ≠ 0 rational; e.g 3/5; 2521/9874

2x where x is irrational irrational; 2√5 ; 2√2; 2π ; 2e

(√2)/y where y is irrational Cannot be determined;

e.g. √2 / √2 = 1 => rational
e.g √2 / √3 = √(2/3) => irrational