Respostas

2014-06-28T11:36:42-03:00
3x²=5x+2
3x²-5x-2=0

5+/- raiz de (-5)²-4.3.(2)/2.3
5+/- raiz de 49/6
5+/-7/6
x=5+7/2=12/6=2
x=5-7/2=2/6=1/3

Espero ter te ajudado