Respostas

2014-07-30T17:36:29-03:00
A=-7+6x-x^2
1=-7+6x-x^2
-x^2+6x-8=0 (-1)
x^2-6x+8=0
S=6
P=8
x=2
x=4
S{2;4}
1 1 1