Respostas

  • Usuário do Brainly
2014-06-24T11:05:41-03:00
1) 12/4√13

12/4√13
12/4√13 . √13/√13
(12 . √13)/(4√13 . √13)
12√13/4√(13 . 13)
12√13/4√169
12√13/(4 . 13)
12√13/52
3√13/13