Respostas

2013-06-13T20:51:59-03:00

2x² = 0
x² = 0 /2
x²= 0
x = raiz de 0
x= 0 

1 5 1
2013-06-13T20:58:58-03:00

2x²=0

x²=0/2

x²=0

x=√0

x=0

1 5 1