Respostas

2014-06-01T21:54:51-03:00
\Delta = b^2 -4.a.c

x²-6x-16=0

a = 1

b = -6

c = - 16

fica : 

 

\Delta = (-6)^2 -4.(1).(-16) = 36 + 64 = 100

1 5 1
2014-06-01T21:54:59-03:00
Delta = (6)^2 - 4.1.(-16)
delta = 36+64
delta = 100