関連ワード:  is 3√2 a rational number    is 3 2 a rational number    is 2 3 a rational number or irrational    is 3 1 2 a rational number    is 3 root 2 a rational number    is 3 over 2 a rational number    is negative 3 2 a rational number    is 3 2 5 a rational number    is 3 2 7 a rational number    is 2 3 4 a rational number