関連ワード:  is root 12 irrational    is root 12 irrational or rational    is root 12 3 irrational    is square root 12 irrational    is root 12 3 irrational number    is root 12/root 3 irrational    is root 12 upon root 3 irrational    is root 12 75 rational or irrational    is root 12 a rational or irrational number    prove root 12 is irrational