Respostas

2013-08-26T13:28:34-03:00
Usando a fórmula de Baskara:
a=2, b= -1, c=-6
delta= b²- 4a.c
delta= -1²  - 4*2*-6
delta=1+24
delta=25
achando o X:
x= -b+ou - raiz de delta
     ________________
                2*a

x1= -(-1)+5/ 4   x1=3/2

x2=1-5/4 x2=-4/4  x2=-1

   s  {3/2, -1}


6 4 6