Respostas

2013-11-23T20:57:19-02:00
3ab(2a+b+a-b)
6a(a)
6a^2
36a
2 1 2
2013-11-23T21:02:17-02:00
Basta multiplicar por partes
3ab(2a+b)
6a²b+3ab²(a-b)
agr a proxima multiplocacao
6a²b+3a²b²-3ab³
2 4 2