Respostas

2014-06-02T21:48:38-03:00
X²+3x-6=-8
x²+3x-6+8=0
x²+3x+2=0        a=1 b=3 c=2
b²-4ac  DELTA
3²-4.(1).(2)
9-8
=1  

-b+/-raiz de delta / 2.a  BASKARA
-3+/-raiz de 1 /2.1
-3+/-1/2

x' = -3+1/2 = -2/2 = -1

x'' = -3-1/2 = -4/2 = -2

S={-2,-1)
4 5 4