The polynomial expression is .

First, To find the G.C.F of .

\ \ The G.C.F is the product of the common prime factors in each number.

G.C.F = 4x.

Write each term as the product of the G.C.F and its remaining factors. Then use the Distributive Property to factor out the G.C.F.

                   (Rewrite the term using the G.C.F)

Combine like terms using distributive property: .

The solution is .