After leaving school 6 years ago with a B in GCSE in Mathematics, I want to study it at A Level after dropping out of college now that I've decided to want to pursue a degree in Physics.
After not studying any Maths whatsoever for 6 years my knowledge has dried up a bit, so what is the best way to refresh my knowledge back to a level at which I would have been going to college with, without retaking an entire GCSE?