"Scared!"

Fang Chao turned around, frightened.

"Teacher, why are you scolding me behind me?"

"I didn't scold you, you do your question, it doesn't matter what I do."

This tutor regretted it very much, he had no image, and he actually swore in front of the candidates, which is very different from him.

"Oh."

Fang Chao responded, didn't pay attention to the teacher anymore, but continued his answer.

In fact, this question can be solved with another way of thinking, anyway, there is more time, and the third question is not in a hurry, so he wrote down the second solution step in the blank space, and this question is equipped with an auxiliary diagram, and the solution idea can be expressed more clearly at once.

Let a1=a+b, a2=c+d, a3=c+a, a4=b+c, a5=d+c

……

……

The maximum value is 288, and it is reached when a, b, c, d, and e are -1, -1, -1, 4, and 4, respectively.

The minimum value is -512, and a, b, c, d, and e are -1, -1, -1, -1, -1, and 9 in order.

"Perfect."

"To put it simply, two ways to solve the problem, I don't know if you can get me a little more points......"

Fang Chao completed the second question, the first idea took about twenty minutes, and the second idea only took about ten minutes, and the two solutions to the second question took a little more than half an hour.

It's not that the second way of solving the problem is faster.

In fact, it is far more complicated than the first way to solve the problem, and there are more steps and algorithms for its operation, but he presents the answer most intuitively, so that anyone can easily understand it, and it does not necessarily need to be a top student to get it.

It's just because Fang Chao has already comprehended this question and understands what the problem is, so he will solve the problem and list the answers in ten minutes.

"Teacher, why are you still behind me...... You're doing this to affect my answers...... I always felt a pair of eyes staring at me behind me, and I was so uncomfortable to say......"

Fang Chao turned around and found that the previous tutor was actually standing behind him, staring at him with a pair of eyes all the time, never leaving, which made Fang Chao think of the bad past, every time he secretly played the glory of kings in the class, the black face carbon leaned against the window in the back of the classroom many times to make secret observations, Fang Chao was secretly caught playing games several times, which made him have a psychological shadow.

It is true that now he and the black face carbon have become an irreversible teacher-student relationship, but that kind of dark days can not disappear with time, so far, whenever he feels that there are eyes secretly looking at him, Fang Chao will feel uncomfortable.

When I was too immersed in the math problem, I didn't realize that when I completed the second math problem, that feeling made Fang Chao creepy and unaccustomed.

"I just walked over to you, you do your question, don't worry about me, I'll just turn around and leave."

This mentor couldn't admit that he had been standing behind Fang Chao, but he secretly smacked his tongue, there was a dark horse in this year's national finals, an absolutely strong dark horse, Fujian, which had been silent for several years, was going to rise this year?

In previous years, the CMO national finals, Fujian's status can be imagined how embarrassing, not up or down, in addition to the high housing prices, it can't even have an advantage over other cities in other aspects, and even in terms of education, the national finals, in the past six or seven years, not to mention the individual awards, that is, the team awards can not see Fujian's figure.

The young man in front of him is only a freshman in high school, but from the first question to the second question, the total time of the two questions adds up to less than an hour and a half.

Four and a half hours, with three hours remaining, which was almost unimaginable in the past.

Is it that the exam questions are too easy? will allow people to solve two questions in such a short time.

No, not really......

Up to now, there are many candidates who are still trapped in the first question.

Are these people stupid?

They are not stupid at all, they are all provincial mathematical geniuses selected from thousands of provinces, and even they are still trapped in the first question of the CMO, which naturally has already explained the difficulty of the national decision.

But this kid is really good at pretending......

The mentor thought so in his heart, but soon he was relieved that geniuses have some quirks, which is easy to understand.

Math genius, what's the point of pretending to be a force? Isn't it math or math if you don't pretend to be forced? The charm of mathematics, how can ordinary people understand it, and talking about love in mathematics is the most wonderful thing in life, isn't it? It was because of his high level of mathematics that he met a Chinese student who was studying abroad at the lake on the bank of the Seine, his wife was seven years younger than him, and the two are currently very happily married, with two daughters, how can people who don't know mathematics know the beauty of life?

At this moment, Fang Chao's eyes were focused on the last question of the CMO national decision.

As the last question on the first day of the national decision, he used the geometry question as usual in previous years to finalize, which is a question that really tests students' arithmetic ability, logical ability, and thinking ability, and this question is also a question used to really open the score.

Fang Chao did not rush to do the question, but first began to review the question, the geometry problem is the most despicable, it is often unexpected, and it will lay a trap in the question, you need to have excellent leadership combat skills, draw a line of auxiliary lines on a simple figure, each of these auxiliary lines is your lifeline, you need to complete the answer you need on these auxiliary lines, the number of auxiliary lines is determined by you, the question is made by others, you are a player, you have the right to decide the difficulty of the game.

But GM is too mean, he has an excellent foundation in mathematics, he has been into mathematics since you were a tadpole, he is always calculating, he is trying to play with you, mathematics is direct and cruel.

He doesn't have to be dead, but any mistake in any line may delay time.

The game is set at a set time.

That's hours.

If you can't find a way out within the allotted time, you'll be declared GAME OVER, with a CD cooldown of one year, and you'll see you next year when the CMO Finals meet.

I love you, everyone meets in the rivers and lakes.

A mistake in a line can delay half an hour or even an hour, or it is possible that from the beginning, your line is wrong......

Faced with geometry problems, even Fang Chao didn't dare to be careless.

The mentor not far away continued to observe secretly, did this third question trap him? Sure enough, it's not omnipotent.

And just fifteen minutes or so later, Fang Chao took out his 2B pencil and began to draw two auxiliary lines on the x and y axes of the two geometric circles.