If f(x) = x2 − 3x − 4 and g(x) = x2 + x, what is (f + g)(x)?

(f + g)(x) = f(x) + g(x) = x² -3x -4+x² +x= 2x² -2x -4

I think it is 1/6 because the possibilities are present when the first die has already got a 2. "Got a 2 on the first die" already happened. 
If the statement is "getting a 3 on the second die and a 2 on the first die" then the answer should be 1/36.