Answer:
1) use a calculator
2) use desmos which is an online graphing calculator (trust me it will help you)
3) Do lots of practice (I know that you probably don't like to practice, but if you practice then you will prevent lots of careless errors because you will have more experience)
4) Pay attention to your teacher
5) When taking a test, try to avoid all distractions and focus on your test.
Answer:
For me, it really helps to go back and see what i got wrong, check where i made the mistake and solve it again. I think you need to know the basic concept before moving on since math builds on itself. If you have a teacher i think it would really help if you talk to them too, they may have some good tips to help you :)
