Consider for very very large values of x for example if you tried to put this into a calculator you would get something like with 95 zeros between the decimal and 25 which is essentially zero, and as x goes to infinity this would get closer and closer to zero.
so all you would have left is 2.2
Consider the graph of , shown below. Notice as , f(x) appears to approach 1/2. But the graph is not actually defined at that point.