x = 2 is a root. So express the quintic in the form (x - 2)(Quartic).

x = 2 is a root of the quartic. So express the quartic in the form (x - 2)(Cubic).

x = 2 is a root of the cubic. So express the cubic in the form (x - 2)(Quadratic).

The quadratic is irreducible so the answer is (x - 2)^3 (Quadratic).