Respostas

2013-06-20T20:32:10-03:00

x(4x+12)=0

x=0

4x+12=0

4x=-12

x=-3

 

x=0 e -3

1 1 1
2013-06-20T21:06:05-03:00

x(4x+12)=0

x=0

4x+12=0

4x=-12

x=-3

 

x=0 e -3