Respostas

2013-11-03T10:19:22-02:00
Delta = b^2 - 4.a.c
Delta = (-5)^2 - 4.1.6
Delta = 25 - 16
Delta = 9
x' = -b + raiz²9 / 2.1
x' = - (-5) + 3 / 2
x' = 5 + 3 / 2
x'= 8/2
x'= 4
x" = -b - raiz²9 / 2.1
x" = - (-5) - 3 / 2
x" = 5- 3 / 2
x" = 2 / 2
x" = 1