Respostas

2014-05-28T16:31:23-03:00
2 e 3 
S= 5     x1=2
P= 6     x2=3

2014-05-28T16:32:30-03:00
X²-5x+6=0 
∆=25-16=9, √9=3 
x=(5±3)/2 
x'=8/2=4 
x"=2/2=1