What is the completely factored form of f (x) = x3-2x2-5x+6?

The answer is (x+2) (x-3) (x-1).

To get this answer first find the possible rational roots using the rational root theorem. Then with one of the potential roots, use synthetic division to divide the polynomial. (If one possible root doesn't work use another). Then simplify.

The answer to your question is D