Respostas

2014-07-30T20:00:10-03:00
Vamos igualar a equação = 0

2x^2 - 7x + 3 = 0

Delta = b^2 - 4.a.c
Delta = 49 - 4.2.3
Delta = 49 - 24
Delta = 25

X = -b +/- raiz de delta / 2.a
X = 7 +/- 5 / 2.2

x' = 12 / 4
x' = 3

x" = 2 / 4
x" = 1/2