Tsk!

So cool!

Xu Qian never felt that learning was so easy.

His mind seemed to have become a hard drive. Those knowledge points that appeared for no reason were downloaded from the Internet and forced into his mind, but they were easily integrated and reorganized.

At this moment, Cao Laomo, who had finished writing on the blackboard, turned around, glanced at him and fell on Wu Yurui and Xu Qian by chance.

"What are you two doing? Who made you whisper in class!"

“Stand up!”

Lao Mo Cao's loud voice was like a loudspeaker.

Wu Yurui was so scared that he stood up decisively.

But when she saw Xu Qian lowering her head, she felt a little angry. If it weren't for this guy, she wouldn't have been attracted to her eyes.

After all, he was a deskmate, so Wu Yurui kicked Xu Qian.

And some students frowned again.

"It's this guy again!"

"Hehe, this is Old Demon Cao, let's make trouble, keep making trouble!"

"Anyway, my math is not good, and I don't like math classes, watch plays!"

"Xu Qian, keep trying!"

Among those nagging, there are many gloatings. After all, the old demon Cao is no better than Wang Yuqin.

"Why are you kicking me?"

Xu Qian asked subconsciously, and then he found that many people's eyes were on him. The most important thing was that Old Demon Cao actually came down.

Xu Qian was startled and quickly stuffed his phone into the table frame.

"Bring it!"

Lao Mo Cao walked up to him and stretched his hand towards Xu Qian, with chalk on his fingers.

In fact, there are whiteboards in the classroom and they are connected to the Internet, but Lao Mo Cao is already in his forties. Obviously, he can't play with whiteboards and can't do PPTs, so he hardly turns on the computer in his class.

Xu Qian sighed, it seemed a bit too much.

But you definitely can't give a mobile phone. This old guy has a stubborn personality. If you give a mobile phone, you may not be able to get it back.

"What?"

Xu Qian stood up, looked confused, and secretly gave Cao Yulin his cell phone silently.

Seeing Xu Qian handing over the phone, Cao Yulin quickly kicked it back with his feet and handed the phone to the back desk.

"cell phone!"

Lao Mo Cao was very angry, and the consequences were very serious.

On the contrary, when Xu Qian heard this, he looked heartbroken and said, "Teacher, how can you see me like this? Am I the one who plays with your phone in class?"

You are not playing with your phone in class, you are also eating spicy strips and sleeping!

My deskmate Wu Yurui felt that she was too miserable, so she would find a chance to change her seat.

Lao Mo Cao didn't ask anymore and did it himself, but after looking at the desk frame, he couldn't find his phone.

He was a little confused. Could it be that Xu Qian really didn't play with his phone?

"Even if you don't play with your phone, what is this?"

Lao Mo Cao took out a bag of spicy strips and a Rubik's Cube.

Someone laughed out loud next to him.

"Haha, I'll eat spicy strips in class!"

"Xu Qian is so awesome. He does everything in class, but he just doesn't listen to the class!"

Alas, this student is really right!

Old Demon Cao was too lazy to care about it. He pointed to the questions on the blackboard, shook the Rubik's Cube, and said, "Go up and answer the questions on the blackboard. I will not only return this thing to you, but you will have no problem sleeping!"

"That's what you said!"

"I said it!"

Xu Qian went to the podium without saying a word, picked up the chalk and started writing.

"Tsk tsk, pretend to behave, I see, this guy is just itchy!"

"The Chinese teacher has a good temper, but the math teacher is not easy to fool!"

"He won't really do it!"

"Just him? If he can, I will write my name upside down!"

When the real number a takes values, the complex number z=a2-a-6(a22a-15)i(1) is a real number; (2) is a pure imaginary number.

Tsk, simple!

(1) The complex number z=a2-a-6(a22a-15)i is a real number;

a22a-15=0,

The solution is a=3 or a=-5.

(2)z=a2-a-6(a22a-15)i is a pure imaginary number;

a2-a-6=0

a22a-15≠0

The solution is a=﹣2.

The classroom was quiet, with only the sound of chalk leaving words on the blackboard.

After answering a question, Xu Qian continued to answer the following questions.

That way, without hesitation, it is like you know the answer as soon as you see the question.

"This... won't be!"

"He didn't even think, he was writing randomly!"

"It must be written randomly. No matter how you say this kind of question, you have to review the question!"

"But... you look at Yu Yuhui's expression, isn't that expression surprised?"

"Hey, have you answered this question correctly?"

"Okay...it seems right!"

"hiss!"

Question 1, Question 2...

It only took a minute until all four questions were finished.

After the complete answer, Xu Qian dropped the chalk, handsomely came down from the podium, and returned to his seat.

A series of actions were completed in one go, even stunned many people.

You know, this is the second semester. Mathematics has eliminated some people, so some students have given up on math classes.

After all, the end of this semester, the liberal arts and sciences will be divided into liberal arts and sciences. Those students who are preparing to study liberal arts can no longer understand the heavenly books on the blackboard, nor can they understand the Chinese and mathematical symbols that popped up from Cao Laomo's mouth.

Therefore, they actually didn't know if Xu Qian wrote it right.

But there are also some people who are still studying and preparing to take the science path. These questions are actually not difficult, but the problem is that this speed of solving problems and the carelessness of solving problems are really eye-catching.

"It's actually...it's all right!"

"How is this possible? Even if it is me, it is impossible to write the answer without thinking!"

"Have you seen the question?"

"Yes, right, I must have read the question!"

They are all from the same class, and I still don’t know how the other party is studying?

Xu Qian is just a crane in the class.

In addition to those students who have completely given up on mathematics and are preparing to take the liberal arts, Xu Qian's math scores are also the last.

Lao Mo Cao looked at the problem-solving steps on the blackboard in surprise, feeling a little surprised.

You should know that this knowledge point has just begun to be discussed. These questions are not simple for those good students in the class. Why can this student whom he has not paid much attention to be answered so easily?

Could it be...

Did you neglect yourself?

No, take the test again!
To be continued...