This is exactly what i said on the other post
all possible roots:
+-1 , +-1/2, +-2, +-4, +- 5, +- 5/2, +- 10, and +- 20
put in order
+-1/2, +-1 , +-2, +-5/2, +-4, +- 5, , +- 10, and +- 20
answer is
C. +-1/2, +-1 , +-2, +-5/2, +-4, +- 5, , +- 10, and +- 20
and
C. 3 solutions
... i also solved on the other post..
solutions: -5/2, -2 and 2
