Let f(x)=2x3−x2−13x+14f(x)=2x^3-x^2-13x+14f(x)=2x3−x2−13x+14.
Show that x−2x-2x−2 is a factor.
Solve f(x)=0f(x)=0f(x)=0, giving non-integer roots to 3 significant figures.