Respuestas

2013-05-26T00:21:54+02:00
(x³-7x-6) =f(x)
  (x+2)

x³-7x-6 =f(x)
  x+2
x³-8x-6 =f(x)
    2
x³-8x-8 =f(x)

f(x)=x³-8x+-0x-8
f(x)=x(x²-8) +1(0x-8)
f(x)=(x+1)(x²-16)
f(x)=(x+1)(x-8)(x+8)
f(x)=x=-1 x=8 x=-8