Which may be because you simply can't do everything good without practice and in pure math, well, there are things you don't do as much. When I go back to the 3

Which may be because you simply can't do everything good without practice and in pure math, well, there are things you don't do as much. When I go back to the 3rd and 4th degree polynoms we solved back in school, it's a hassle. Back then I was quite good at solving them but nowadays it just takes time to get accustomed to these kind of problems.