Respuesta :

- 1 || 1  2  2  -2  -3

         -1  -1   -1   3

    =============

     1    1   1  -3  0

So far what you have is x^3 + x^2 + x - 3 = 0

This produces one more real

1  ||  1   1    1   -3

          1    2    3

   ===========

      1   2   3   0

Now what you have is x^2 + 2x + 3 = 0  which gives 2 complex answers.

You final answer is (x + 1) (x - 1) (x^2 + 2x + 3) = 0