Respostas

2014-08-28T00:09:50-03:00
- X^2 - 6X + 12 - 28 = 0
Delta = b^2 - 4 .a . c
Delta = (- 6)^2 - 4 .(-1) . (-16)
Delta = 36 + 64
Delta = 100

X = - b + e - Vdelta/ 2 .a
X = - (- 6) + V 10/ -2
X' = 6 + 10/-2
X' = 16/ -2
X' = -8
X" = 6 -10/ -2
X" = -4/2
X" = -2
V = { - 8, -2 }