Rationalizati numitorii:
21/radical 3
18/2 radical 3
15/radical 3
12/radical 6
36/3 radical 6
18/radical 6
24/2 radical 6
15/radical 5
20/2 radical 5
30/3 radical 5
25/radical 5
24/radical 8
20/radical 50
14/radical 2

/-supra
Va multumesc mult iar primul care raspunde primeste 30 puncte! :D