Respostas

2014-08-28T10:25:03-03:00
3a+5b-8
a=3
b=5
c=(-8)
Δ=b²-4.a.c
Δ=5²-4.3.(-8)
Δ=25+96
Δ=121

x=-b+e-√Δ
x=-5+e-√121
x1=-5+11/6 =6/6=1
x2=-5-11/6=-16/6 simplifica por  ²= 8/3    
S{ 1,8/3