Dễ thấy tiệm cân đứng của \(\left(C\right)\) là \(d_1:x+1=0\), tiệm cân ngang là \(d_2:y-2=0\)

Vì \(M\in\left(C\right)\) nên  \(M\left(x_0;\frac{2x_0-1}{x_0+1}\right)\), ta có:

\(d\left(M,d_1\right)=\left|x_0+1\right|;d\left(M,d_2\right)=\left|\frac{2x_0-1}{x_0+1}-2\right|=\left|\frac{-3}{x_0+1}\right|\)

Suy ra \(d\left(M,d_1\right)+d\left(M,d_2\right)=\left|x_0+1\right|+\left|\frac{-3}{x_0+1}\right|\ge2\sqrt{\left|x_0+1\right|.\left|\frac{-3}{x_0+1}\right|}=2\sqrt{3}\)

Đạt được khi \(M\left(\sqrt{3}-1;2-\sqrt{3}\right)\) hoặc \(M\left(-\sqrt{3}-1;2+\sqrt{3}\right)\)

Tổng vận tốc hai xe là:

196 : (9-7) = 98 (km/giờ)

Vận tốc xe thứ nhất là:

( 98 + 6 ) : 2 = 52 (km/giờ)

Vận tốc xe thứ hai là:

( 98 - 6 ) : 2 = 46 (km/giờ)

Đáp số : 52 km/giờ ; 46 km/giờ

này cái pạn trần trân j đó ơi,pạn lên cơn hong zậy tự dưng đi bảo người ta là súc vật 1 ngón tay pạn bảo ngừi ta là súc zật thì 9 ngón còn lại cho mik chửi lại pạn nha

à thế à

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The places where people live affects greatly in their lifestyles and the living place is one of the very basic needs for people. People opine differently while choosing the living places. Some prefer and argue that city is the best place to live at since it provides so many advantages over the rural area, but other think that villages are the best places to live a good life. Both places have advantages and disadvantages.
It is true that a city offers so many opportunities and advantages those are absent in a countryside. For instance, the modern transportation and communication systems are better in any city compared to a village. In a city people have access to many different transportation systems and have latest technologies to communicate; cellular phones, internet, fax etc. Moreover, when a new technology arrives at the country it is first introduced in the city area and usually 2/3 years later to the village. Secondly, cities provide better security to its inhabitants the mobile police patrols, special forces, community police, security guards, traffic police etc. But in the village, the number of security force persons are too low compared to the overall population. Moreover, cities provide better treatment, hospitals, qualified doctors, better educational institutes, and amusement parks etc which are really inevitable to lead a better life. In many cases, those facilities are absent or rare in a village. In my opinion, the reason for why most people tend to live in a city is the vast opportunities of jobs. Most of the corporate offices, industries, factories, government offices, garments and manufacturing industries are either situated in a city or close to the city. People have much more employment opportunities in a city than a village. On the contrary, people living in a village, are often forced to do a job that is not suitable at all for him since the job opportunity is so narrow there. Again, schools or colleges are not equipped with a better environment, labs, teachers and that's why students in a village might not get a better education he/she deserves. If we consider the entertainment facilities in a city then citizens of a city have so many options theatre, park, art gallery, museum, amusement parks, libraries etc. But people in the villages have only TV or books and very little facilities to spend leisure time.
On the other hand, Villages offer many invaluable advantages those are completely absent in the cities. First of all, someone living in a village can get fresh air and water. There is no intense pollution with smoke, Carbon-DI-oxide, Carbon-mono-oxide, Nitrous-Oxide and people living in a village are less prone to suffer diseases asthma, bronchitis etc. The city can provide security against visible foes but it causes people to face some invisible and dangerous enemies toxic and polluted air, water and environment. Secondly, people of villages live much nearer to the nature and breathe in the fresh air, as well as eat fresh foods, vegetables, fruits collected directly from the garden. On the contrary vegetables, foods, fruits in the cities are normally stored and mixed with preservatives and can cause serious harms to the health. The living cost in a countryside is much lesser than that of a city. The density of population in a village is much less than a city and village people are naturally grow up their personal relationship among all people and live a real community and take care of each other. While in the city people do not know even who live in the next door and personal relationship in a community is rare.
In my case, I prefer to live in the city. I feel relaxed and comfortable staying in my own city. There are lots of facilities I can't deny are presented in my city and those are the invaluable part of my lifestyle. Moreover, I to lead a busy and challenging life and want to be connected with the world. I enjoy visiting countryside but get bored there if I stay more than 2/3 days because all of my necessary stuff to lead my as usual life are absent there.

Câu là  người ghi câu hỏi này ....

Mik là thui tẹo nữa nói

-20=-20

16-36=25-45

4²-4.9=5²-5.9

4²-2.4.9/2+81/4=5²-2.5.9/2+81/4

(4−9/2)^2=(5−9/2)^2

4-9/2=5-9/2

4=5

4-4=5-4

0=1

tk nha