Rogue Xueba

After the bell for the evening self-study get out of class rang, Li Huai was the first to stand up and leave his seat. Chen Chen glanced at Li Huai. He decided to implement his little plan. First of all, he would follow Li Huai wherever he went. where.

Most of the students in the second class are very self-conscious. They are still doing exercises after evening self-study. Xie Huan spotted Chen Chen, so he walked over to ask him a math problem. Chen Chen was about to follow Li Huai back to the dormitory , he was stopped by Xie Huan just after taking half a foot, Chen Chen frowned and couldn't express his resentment on Xie Huan, so he could bear his temper and asked: "Student Xie Huan, may I help you?" ?"

Xie Huan was completely dumbfounded when he heard that, because Chen Chen usually spoke to him in a rough voice, and such a polite Chen Chen seemed to be hiding something, in short, it aroused his interest.

"Brother Chen, it's not like you. I'm not used to being so gentle all of a sudden." Xie Huan rubbed his head and said embarrassedly.

"Bah! Put your farts away. I'm busy. I have a task. I want to catch that kid Li Huai and let him learn English well. His grades in every subject are so bad. I don't know which subject to teach him." Wow, fortunately, I have issued a military order in front of the head teacher, number one, number one, damn it, it’s fine for me to take the first place in the exam, but I have to guarantee the first place in the class, so it’s useless for me to get full marks in the exam alone... "

Chen Chen took a look at Xie Huan, and he decided not to talk to him about these things that bothered him, because Xie Huan couldn't help him, and this is something that only a man of strength is qualified to worry about. Obviously he is Chen Chen. An amazing man, so this problem fell on him and he solved it by himself.

After all, they really can't help fundamentally, hey, it's really not easy to be a talented man in this world, Chen Chen can only sigh secretly, he is lamenting that he is also lamenting all kinds of celebrities.

"Li Huai? Why do I always think that kid is not necessarily a scumbag? Maybe he just doesn't like to study. Brother Chen, you can find a way to stimulate his desire to learn, so it won't be such a headache. Come on. Come on, help me look at this question first, how to answer this question, I haven't figured it out after reading it for a long time."

Xie Huan thought that for people like Li Huai, he had to take his time. After hearing this, Chen Chen frowned even deeper. He felt that Xie Huan was just talking nonsense.

Who doesn't know how to use the right method, but the question now is what other tricks can be used.

"Forget it, you don't understand these too complicated questions, you'd better talk about it quickly, what kind of topics you don't know, after teaching you, I'm going to the cafeteria to buy grilled chicken wings." Chen Chen said impatiently He glanced at Xie Huan.

Xie Huan brought out his own book very sensibly, he pointed to an exercise in the mathematics book, Chen Chen leaned up and glanced at it, and said: "You can use the software to have a look, I think you can use the software to learn, It’s better to practice more and more when doing mathematics, otherwise you will be confused just by seeing the questions.”

Xie Huan thought it made sense. He stared at the question in the exercise book. It was an exercise in solving inequalities. Since Xie Huan's mathematics was not very good, his grades were also dragged down by this subject. It's not a good thing. If his math scores are really bad, he may not even be able to pass the university entrance exam.

Education is too important these days. For a student like him whose family background is not particularly wealthy, the scores on the test paper seem to be his only way out.

Chen Chen took out his mobile phone, he clicked on an APP on the screen of the mobile phone, and he sent the APP to Xie Huan's QQ account in the form of sharing. Chen Chen shared it with Xie Huan because he thought the APP was easy to use. He planned to go to Li Huai's dormitory to find Li Huai. He had already made up his mind to die, and he would install this learning software for Li Huai no matter what.

Xie Huan was still staring at the question in a daze. The math problems in the book really made his head hurt, and he couldn't solve it. He felt that he was completely lost in this kind of problem.

Chen Chen glanced at the topic, then he took out the draft paper and started to calculate, his brain was starting to work quickly.

This is an exercise in finding inequality. There are seven known conditions. First of all, these seven points are known to be interrelated.

①解不等式2X2-2√5X+3＜0

②不等式X2+2X+3＜0的解集是A.｛X｜1＜X＜3｝B.｛X｜-3＜X＜-1｝C.RD.Φ③对于任意函数a∈R，直线（a+1)X+(a-1)Y-4a=0经过定点__

④若X/（X-2)2=m/(X-2)+n/(X-2)2,m,n是常数，则（m,n)=__

⑤已知多项式6X2+11x-25除以mX-5,得商式为2x+7,余式为n，求m,n的值

⑥若函数y=-x2+2x+a(0≤x≤3)的最大值与最小值的和为4，求实数a的值。

⑦It is known that f(x)=x2+ax+3-a, when x∈[-2], f(x)=≥2 is always established, find the value range of the real number a.

Xie Huan just stood aside and watched Chen Chen writing the draft. Rather than saying that Chen Chen was writing the draft, it might be better to say that he was writing the seven-corner connection diagram. The draft Chen Chen made was very strange, but it gave people a very clear However, Xie Huan still couldn't understand the contents of Chen Chen's draft paper. He looked down at Chen Chen's writing, and he looked dazed. Make something like "studying the depths of black holes in the universe".

Chen Chen has already calculated the answer to the question at this moment, what he is struggling with now is how to explain it to Xie Huan, the explanation is too complicated for Xie Huan to understand, it doesn't make sense to say it like this, Chen Chen's little brain has an idea , He tried to make the answer a game, but he didn't know if Xie Huan's brain could react.

"Ahem, cough, don't be distracted, listen well, let me say it first, see if you can understand." Chen Chen cleared his throat and said to Xie Huan.

Xie Huan came back to his senses and nodded: "Tell me, if you don't understand, I'll ask again."

Chen Chen wrote down the answers to the exercises, seven answers were regularly written on the draft paper, and then he began to explain.

“你先看第一题，解不等式2X2-2√5X+3＜0，那我们开始假设，设2X2-2√5X+3=0

△=20-24=-4<0，2X2-2√5X+3=0无解，2X2-2√5X+3恒大于0，2X2-2√5X+3＜0的解集为空集。

The above is the basic answer method. For the first question, it is recommended to read more formulas and learn to use them to solve the problem. This problem is on the ninth page of No. 70 in the mathematics book. You should write it down first, and you can look it up later, and then Find a few similar topics to do. "Chen Chen marked the answer and the number of pages on the draft, Xie Huan nodded and continued to listen.

"Let's take a look at the second question. This is a multiple-choice question. First, we have the known conditions that have been calculated.

他求的是解集，不等式X2+2X+3＜0的解集是：X2+2X+3=(X+1)2+2≥2X2+2X+3＜0的解集为Φ，其中他给出的选项是：

A.{X｜1<X<3}

B. {X|-3<X<-1}

CR

D.Φ

The answer is to choose D. You can do the calculation again. If you are afraid of making mistakes, the multiple-choice questions seem to be only four choices, but there is no result. The truth of all people. "

Chen Chen drew a cross on the rest of the wrong answers in this exercise and indicated the reasons.

Xie Huan seemed to understand, but Chen Chen saw the problem. He felt that Xie Huan's basic knowledge was not solid enough, and he was obviously resistant to mathematics.

"Xie Huan, I'm going to buy chicken wings now. You can complete the rest of the questions yourself. I'm afraid I won't have enough time after I finish teaching you. I have a suggestion for your study situation. The software "I want to be a master" There is a math game in it. There are mostly multiple-choice questions but there are wrong questions broken down. I suggest you play the game. In fact, doing math problems doesn’t have to be so boring. You can also listen to songs and do the questions while singing. OK, for listening to the song, I suggest listening to the Cantonese version of "The God of Wealth Arrives". The feeling of getting rich, in short, work hard, brother, my mouth is dry when I say it. "

After Chen Chen helped Xie Huan install the learning software, he hurried out of the classroom. At this time, the second class was very quiet, and there were still many students who were studying hard in the classroom. If you buy late-night snacks in the canteen, you may not be able to buy them any later.

Naturally, there was a reason why he wanted to buy grilled chicken wings. You must know that Li Huai likes to eat grilled chicken wings. Chen Chen was wondering if he could use delicious food to lure Li Huai to study hard and improve every day.

If you can't do it, you have to do it. Chen Chen doesn't believe that Li Huai will refuse the delicious grilled chicken wings. There is no one who doesn't have the slightest heartbeat in the face of delicious food.

When Chen Chen walked quickly to the stairs, the cheerful melody of "The God of Wealth Arrives" suddenly came from Class Two classroom——

From the God of Wealth to the God of Wealth, good intentions and good rewards

The Myth of Wealth The Myth of Wealth The Myth of Money

From the God of Wealth to the God of Wealth, go two steps faster

Get him to see you, you have a future

Hehu celebrates the new year with joy

Congratulations on how blessed and strong you are

Congratulations on your promotion this year

A lot of laughter in the morning and evening, a bright future

May the couple be loving and considerate

There are lucky stars all day long

Meet relatives and friends, talk and speculate

Full of joy and joy in the new year

Congratulations to all the couples

I also hope that all workers will succeed in their careers

Everyone is happy and carefree without fighting

Listen to the song and let go of the hatred

La la la la la la la…………

This festive tone was particularly prominent in the quiet corridor, and then quickly stopped. My intuition told Chen Chen that Xie Huan must have been hammered by someone, damn it...

Does he know how to wear earplugs while singing?

Sure enough, this Xie Huan is also a full-fledged talent, and Chen Chen is beginning to be impressed by this kid's IQ...

Chen Chen didn't think about anything else, he went straight to the dining hall, he was going to send the honey sauce chicken wings to Li Huai's dormitory, and chatted with this young man about life's major events by the way.