Why should mathematics be so flexible?
Because mathematics itself is a discipline to exercise thinking ability, mathematics is actually not difficult. Generally speaking, the big questions in the exam are formulas and methods that are repeated. Usually doing more problems makes it easier to do math problems. Learn to turn your head when doing problems, and sometimes push the formula backwards. You should study math flexibly. In fact, you should use the formula flexibly. If you want to learn math well, you should listen carefully and listen more in class. Ask the teacher more. I can only tell you this. It is good to understand thoroughly. In fact, when I study math and geometry, I find it difficult to learn. I just can't get over it when I do the problem. Later, I did a lot of questions, and I often asked the teacher if I couldn't understand them, so I got better slowly, hehe.