T1:
Currently, families are giving their children too much use of electronics such as phones and computers. They have a great influence on a child's nervous system. Not only affects the nervous system, children also have the ability to affect vision and brain. Since there are so many emerging games now, children often stay up late, affecting sleep. Families need to put their children under house arrest, let their children play less on phones and computers, and exercise outdoors to have a healthy body.

T2:
Nowadays, the Earth is worse. Everywhere is trash. Some oceans have been hit by "garbage floods." People even mistake garbage for fish. Garbage also has a significant impact on the natural terrestrial environment. Currently, there are already a number of large companies promoting environmental protection. They also show us the harm of garbage covering the WHOLE WORLD in the future. Maybe in the future, we will have restaurants that process food from garbage, such as spaghetti with meat made of plastic bottles, noodles with plastic... Scientists believe that soon the amount of garbage is greater than the number of fish...

n² + 3 chia hết cho n + 1

n² + n - n + 3 chia hết cho n + 1

n(n + 1) - n + 3 chia hết cho n + 1

=> n + 3 chia hết cho n + 1

=> n + 1 + 2 chia hết cho n + 1

=> 2 chia hết cho n + 1

=> n + 1 thuộc Ư(2) = {1 ; -1 ; 2 ; -2}

Xét 4 trường hợp , ta có : 

n + 1 = 1 => n = 0

n + 1 = -1 => n = -2

n + 1 = 2 => n = 1

n + 1 = -2 => n = -3

loại ngu đầu bài đễ thế này mà cũng phải hỏi óc bã đậu

tôi đã bảo bài này rất dễ nên Công chúa ori , bạn đừng ns nhìu . Bạn ms là loại ngu 

yup cái này tôi biết để tôi đăng lên vậy

sai sai đợi một xíu

Watching TV is one of my favourite pastime activity. I usually watch cartoons so the cartoon I love best is Detective Conan write by Aoyama Gosho. . That is a story tells about revolve around a the cases. Kudo Shinichi is a high school student and also a detective, he always helps the polices in many cases. But at one day during the investigation, he was discovered by a member of the Black Organization. They gave him a small capsule pack (called APTX 4869), but the poison did not kill him, just causing his body to become a child. So he must changed his name, and his new name is Edogawa Conan and lives with Ran- his best friend and Ran's father - Mori. However, in that child body, he still helps the polices by many invents by Dr. Agasa Hiroshi. He has to go to Primary School and there, he meet five friends and they become a small detective team. That's a very great film. If you don't like to watch, you also can read comics!

Đây nhê:>>> 

x+10 chia hết cho x+1

=>x+1+9 chia hết cho x+1

=>9 chia hết cho x+1

=>x+1 \(\in\)Ư(9)={1;3;9}

Xét 3 trường hợp , ta có:

x + 1 = 1 => x = 0

x + 1 = 3 => x = 2

x + 1 = 9 => x = 8

Vậy x = {0;2;8}

x +10 chia hết x + 1

=>x+10-x-1 chia hết x+1

=> 9 chia hết x+1

=> \(x+1\in\left\{1;-1;3;-3;9;-9\right\}\)

Rồi bạn thử ra là xong

Áp dụng công thức sau : 

a chia hết cho m 

b chia hết cho m 

=> a + b hoặc a - b chia hết cho m 

=> Ta có :

x + 10 chia hết cho x + 1

x + 1 + 9 chia hết cho x + 1

=> 9 chia hết cho x + 1 

Vì x + 1 chia hết cho x + 1 

nên ta loại x + 1 bên vế trái đi , ta còn 9 

=> x + 1 thuộc Ư(9) = {1;-1;3;-3;9;-9}

Xét 6 trường hợp , ta có :

x + 1 = 1 => x = 0

x + 1 = -1 => x = -2

x + 1 = 3 => x = 2

x + 1 = -3 => x = -4 

x + 1 = 9 => x = 8

x + 1 = -9 => x = -10 

trọng âm không nhẹ nhàng tí nào cô ạ :v

chúc các sĩ tử có một cuộc thi đầy may mắn và thành công

trọng âm và phát âm là 1 nỗi ám ảnh lớn zới em

+ròng rọc động giúp làm lực kéo vật lên nhỏ hơn trọng lượng của vât

+ròng rọc động cho phép ta lợi 2 lần về lực

Hu Go