関連ワード:  under root 2 is a rational number or not    root 2 3 is a rational number or not    root 2 is an irrational number or not    2 root 5 is a rational number or not    prove that under root 2 is not a rational number    show that under root 2 is not a rational number    is root 2 a rational number    is 1/√2 a rational number    is √2 a rational number  
結果 : under root 2 is a rational number or not