KöMaL 2012 C1141

The last digit of $n^3$ +3 $n^2$ +3 $n$ is 4 ( $n$ is a positive integer). What is the last digit of 4 $n^2$ +5 $n$ +6?

Official text KöMaL. Quoted with source.

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.