Basic operations, simple factors, factor Theorem, Remainder Theorem, Division of polynomials.

Let f(x) = x^{3} - 6x^{2} + 11x - 6.

Then, which one of the folllowing is not a factor of f(x) ?

** Option:**

**A.**x - 1

**B.**x - 2

**C.**x + 3

**D.**x - 3

**Answer: C . x + 3**

** Justification:**

Since x = -3 does not make (x^{3} - 6x^{2} + 11x - 6) zero,

so (x + 3) is not a factor.