You can
put this solution on YOUR website! The Remainder Theorem tells us that f(2) will be the remainder you get when dividing f(x) by x-2. And the fastest, easiest way to divide by x-2 is to use synthetic division (which I hope you've learned):
2 | 1 4 -6 1 12
== 2 12 12 26
=================
1 6 6 13 38
The remainder is in the lower right hand corner, 38. So f(2) = 38.