Respostas

2013-11-03T17:58:07-02:00
2x² - 8x + 8 = 0
a = 2
b = -8
c = 8
Δ = b² - 4ac    Δ = (-8)² + 4 . (2) . (8)      Δ = 64 - 64     Δ = 0
x = -b ± √Δ / 2a    x = -(-8) ± 0 / 2 . (2)    x = 8 / 4     x = 2