If - 1 is a zero then
is a factor.
Dividing with this factor using the long division approach, we get the quadratic factor to be,
(see attachment).
We can rewrite the polynomial as
We can further factor as
That is
is a factor.
Dividing with this factor using the long division approach, we get the quadratic factor to be,
(see attachment).
We can rewrite the polynomial as
We can further factor as
That is