I am a senior three student, and my grades are in the top ten.

My math scores are high and low. Get 147 and 150 when you are good, and get 1 10 or more when you are lazy. The reason lies in carelessness and wrong answer.

In fact, I later concluded that being careful is also an ability.

I always thought that this could not be changed. Later, I found that caring can also be trained by sea tactics.

Just like LN (5x 2+ 10x+9), to find its increasing interval, we should not only consider the symmetry axis of the quadratic function inside, but also make it greater than zero. (Because real numbers should be greater than zero). At the beginning, I always felt that I was not careful enough and always made mistakes. However, many similar topics were done later. As soon as I saw this, I immediately responded that it was greater than zero. This is no longer a cautious question, but an instinct.

So I suggest you do more questions, not afraid of making mistakes. The key is to learn a lesson and avoid it in the future.

I hope it helps you! Hmm. How interesting