Respostas

2014-07-16T17:33:30-03:00
X² - 5x + 6 = 0
Δ = (- 5)² - 4.1.6
Δ = 25 - 24
Δ = 1

x = 5 + - √ 1 / 2
x = 5 + - 1 / 2

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

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