Respostas

2013-09-26T15:58:21-03:00
Y = 3x² - 5x + 1
a = 3
b = -5
c = 1

Δ = b² - 4 ac
Δ = (-5)² - 4 . 3 . 1
Δ = 25 - 12
Δ = 13

x = - b ± √Δ / 2a
x = - (-5) ± √13 / 2 . 3
x = 5 ± √13 / 6

x' = 5 + √13 / 6
x'' = 5 - √13 / 6
1 3 1