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2014-08-11T00:05:59-03:00
(x + 2) (x + 3) = 0
x^2 + 3x + 2x + 6 = 0
x^2 + 5x + 6 = 0
Delta = 5^2 - 4.1.6
Delta = 25 - 24
Delta = 1

x = - 5 + - raiz de 1 / 2
x = - 5 + - 1 / 2

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

x " = - 5 - 1 / 2 = - 6 / 2 = - 3
1 5 1