Question 976062
Synthetic Division gives this:



________________|________
_______________|
_______-1______|________1______4______6_______4_______5
_______________|_______________-1____-3_______-3_____-1
_______________|__________________________________________
_______________________1______3_______3_______1______4


NO.  The remainder is not 0.  x=-1  IS NOT a root.


Try testing for x=-5 and continue from there.

_______________|
_______-5______|________1______4______6_______4_______5
_______________|_______________-5____10_______-80_____380
_______________|__________________________________________
_______________________1______-2_______16______-76______385


NOT a root or zero either.



Using software for graphing to make a fast check, your function p(x) has NO REAL zeros!!!