Respostas

2014-06-14T15:46:29-03:00
x²-5x+6=0
Delta= -b².4ac~~> 5²-4.1.6=25-24~~>Delta=1
X'= -5+1/2=-2
X''= -5-1/2= 3
2014-06-14T16:28:04-03:00
 Baskara: x²-5x+6=0

x= 5 ±√25-4.1.6
_____________
          2
x= 5 ± 1
________       x1= 3 e x2=2
      2