Respostas

2013-09-17T15:03:39-03:00
A resposta do (x+3)4 é: 4x+12
1 5 1
2013-09-17T16:40:45-03:00
4*x + 4*3 = 4x + 12.
E o valor de x é: 4x = -12  x = -12/4 x = -3