Question 962920
k=-1 should be tested as a root using synthetic division.


-1_________|_____________________________
___________|
___________|
___________|_______2_________1_______1_______-6
___________|
___________|________________-2_______1_______-2______
__________________2_________-1_______2_______<b>-8</b>



{{{f(x)=(x-(-1))(2x^2-x+2)+(-8)}}}

{{{f(x)=(x+1)(2x^2-x+2)-8}}}