Respostas

2014-06-07T00:07:20-03:00
-3x (-2x-4)          

+6x² + 12x
1 5 1
  • Usuário do Brainly
2014-06-07T10:01:11-03:00
- 3x . (- 2x - 4)
6x² + 12x = 0
x . (6x + 12) = 0
x = 0
6x + 12 = 0
6x = - 12
x = - 12/6
x = - 2