Respostas

2013-08-30T16:59:38-03:00
|x x| = -6
|5 x|
Diagonal principal:
x.x = x²

Diagonal secundária:
5.x = 5x

Det = Diag p - Diag s
-6 = x² - 5x
x² - 5x + 6 = 0

Δ = (-5)² - 4.1.6
Δ = 25 - 24
Δ = 1

x = -(-5) +/- √1 / 2.1
x = 5 +/- 1 / 2

x' = 5 + 1 / 2
x' = 6/2
x' = 3

x'' = 5 - 1 / 2
x'' = 4/2
x'' = 2
4 3 4