関連ワード:  under root 2 3 is a rational number    root 2 3 is a rational number true or false    root 2 3 is a rational number or not    is square root 2 3 a rational number    under root 2 under root 3 is an irrational number    2 root 3 is a rational number or irrational    2 under root 3 is an irrational number true or false    root 2 3 is an irrational number    root 2 divided by 3 is a rational number    prove that 2 root 3 is a rational number