Respostas

2014-03-23T21:06:05-03:00
2014-03-23T21:13:50-03:00
Use bhaskara

Δ = b² - 2a.c
Δ = 14² -2(2).(24)
Δ = 100

x= -b =+- √Δ/ 2a

x'= -2 + 10/4 =0,5 ou 1/2

x"= -2 - 10/4 = -4,5 ou 9/2