The things that you require to remember the math formula is a colorful paper,marker or pen or pencil something that you can write with.
Step1
The best way to remember the formula for math is to write down the formula on the paper as much as you can while you are writing down the formula it's better if you keep on saying it.
Step2
After you are done with writing the formulas on your paper you could take the paper and try to write down the same formulas without looking at it so that you can make sure that you have remember the formulas.
Step3
After doin that i recommened everuyone that write down that formula on colorful paper with some bright colors and paste it on your bedroom where you can see while you are on your bed. It helps you to remember the formula for ever when you paste it you can see from your bed so while you are on your bed you can see it and won't forget it and on the morning while you wake up your eyes goes straight on the formula so you won't forget it.
Tips & Warnings
In this way you can remember as many formulas that you want to. Try not do more than 5 at a time because if you see more formulas your mind gets distracted and does not want to remember it.
Try to say the formulas on your free time so that you will always remember them when you need them.