Question

F(x)= 6x^3+13x^2 +x-2.
Show that (2x +1)is a factor

Answer 1

Step-by-step explanation:

if 2x+1 is a factor then f(-1/2)=0

so

=6(-1/2)^3+13(-1/2)^2-1/2-2

=-3/4+13/4-1/2-2

=(-3+13-2-8)/4

=(-13+13)/4

=0

it is a factor