Hearing Li Su's question, Cheng Chuliang took the lead and said: "Your Highness, I want to join the gang and fuck it!" I brought the money and people, just waiting outside the school, what do you want us to do, just a word from His Highness! ”

Huo, can this thing speak? Do you think it's the underworld that is the king of the mountains or what?

However, he is still very satisfied that Cheng Chuliang can become a shareholder.

Followed by Yu Chi Baoqi and Qin Huailiang and others, they all expressed their willingness to join the shares.

Moreover, they did not just bring ten pieces of money, but each family brought at least ten people.

It can be seen that none of these old fellows have a good stubble, and their ideas are all strikingly similar.

And they are also quite supportive of their business.

Of course, if there was no scene of Li Shimin showing the Zhenguan table and the Zhenguan chair, it is really difficult to say whether they would agree to this matter.

After discussing this matter, it was time for afternoon class.

When their arithmetic master Wang Xiaotong entered the classroom, he couldn't help but startle all the schoolchildren.

Huo, Master Wang Xiaotong couldn't have slept all night last night, right?

His face was dull and tired, his eyes were red and bloodshot, but his spirit was surprisingly excited.

After walking into the classroom, Wang Xiaotong couldn't help but ask Li Su: "Your Highness, is the answer to the question you came up with yesterday 241 and 41?" ”

Hearing this answer, Li Su couldn't help but be taken aback.

I really didn't expect that Wang Xiaotong only took one night to figure out this question?

Wang Xiaotong knew what he was thinking when he saw Li Su's expression at a glance, and couldn't help but say: "The answer is that I used a stupid method to calculate little by little." Actually, I don't have a clue how to solve this problem. Your Highness, can you tell me the idea of solving the problem? ”

Ideas for solving problems?

Li Su was originally going to pretend that he didn't know this question, but seeing Wang Xiaotong's thirsty expression, Li Su couldn't help but soften.

Li Su felt that if he didn't tell him the answer today, it was estimated that he wouldn't be able to sleep well today.

Thinking of this, Li Su couldn't help but say to Wang Xiaotong: "Master, if we want to solve this problem, we need to assume a few unknowns. First of all, we can assume that the speed at which the team is advancing is Aix. ”

As soon as he said this, Li Su's explanation was interrupted by Wang Xiaotong: "Your Highness, Aix is a god horse?" ”

"Ax is—" Li Yu took a deep breath, and then explained: "It's the meaning of the unknown, and Ix will be replaced by Ax for the time being." ”

The next solution ideas need to be described with graphs.

Therefore, Li Su naturally walked up to the podium, picked up the pen on the case, and began to explain to Wang Xiaotong on scratch paper.

"Master, you see, the team has advanced a total of 100 zhang, and dividing 100 by the unknown number of Ax is the time it took them."

"Huh? What do you mean by this equation? What is this? What is this? ”

In fact, after naturally writing out the equation, Li Su began to regret it.

Because he uses Arabic numerals, and he also uses addition, subtraction, multiplication, and division symbols.

But in Datang, these have not yet appeared.

To answer this question, you must first explain the meaning of Arabic numerals and various symbols.

Just explaining this would take a long time.

But now that it has been written, Li Su also has to explain it to Wang Xiaotong.

"Master, this is because when I was calculating, I thought it was too cumbersome and inconvenient to write Chinese characters, so I used these symbols to represent numbers. You see, these are 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, with these ten numbers to represent from one to ten. ”

These symbols represent addition, subtraction, multiplication and division, for example, + addition-subtraction * multiplication \/division. Using these symbols to represent numbers is not only extremely simple and convenient, but also easy to understand. ”

After listening to Li Su explain the role of these symbols, Wang Xiaotong's eyes became brighter and brighter, and he almost jumped up with excitement.

"Your Highness, great, you are really amazing! On behalf of arithmetic, I would like to thank you for your contribution! ”

The meaning of these symbols is much greater than this question! There is also the idea of solving the problem of Aix proposed by His Royal Highness, which has opened a new door for arithmetic! ”

"Your Highness, please accept the worship of this master!"

After that, Wang Xiaotong really respectfully saluted Li Su.

Of course, Li Su didn't dare to accept it, and quickly hid to the side.

This scene directly stunned the friends below.

I'm a big Cao, and His Royal Highness the Sixth Prince is also awesome, right?

The master who fooled him in a few words saluted him?

Li Su asked helplessly, "Master, do you want to hear me explain this topic to you?" ”

Hearing this, Wang Xiaotong came back to his senses and hurriedly said, "Yes, of course I do." ”

Next, Li Su began to explain this topic to Wang Xiaotong.

This time, the idea that Li Su explained to Wang Xiaotong was a ternary equation.

Because the binary quadratic equation involves the problem of opening the square, this is another difficult problem, and it will not be clear at all for a while.

Well, it's not that it's not that it's not clear, but Li Su just knows how to memorize a few square roots, and as for how to open the square, Li Su can't remember clearly.

Fortunately, Wang Xiaotong has a solid foundation in arithmetic, except that he does not understand the arithmetic formula and needs to be consulted.

In terms of problem solving ideas, it is really easy to understand.

After a short time, Li Su finished explaining this topic.

And Wang Xiaotong is dancing excitedly.

Today, the harvest is just too great for him.

Not only did I get the number symbols, but I also got a new way of solving the problem, setting the unknown number of Aix.

With these two tools, the road of arithmetic will definitely be able to reach a new level!

Now, he has so much to do that he can't even take care of class.

Therefore, Wang Xiaotong waved his hand and couldn't wait to get the students out of class.

After class, Wang Xiaotong first hurriedly recorded these number symbols carefully, so as not to forget.

Next, Wang Xiaotong began to write the recital.

The emergence of these symbols is definitely an epoch-making change for arithmetic.

How can such an advanced symbol not be promoted across the country?

Therefore, Wang Xiaotong couldn't wait to write to the emperor.

First of all, it was proposed by the sixth prince Li Su, who praised Li Su fiercely, and exaggerated the contribution made to Li Su to the sky.

Next, Wang Xiaotong introduced in detail the flexibility and ingenuity of this set of numbers and symbols, with these numbers and symbols, arithmetic will be able to create a new era.

In the end, of course, the emperor was asked to be able to promote this set of numbers and symbols throughout the country.