bài 2 code python đơn giản thôi cho dễ nhớ ng kia em thi r ;-; sợ học không kịp
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NQ
1
1 tháng 5 2023
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...
19 tháng 11 2016
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
YM
9
22 tháng 6 2021
yup cái này tôi biết để tôi đăng lên vậy
22 tháng 6 2021
đấy là cái code cơ bản thôi nha bạn
YH
1
4 tháng 1
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:>>>
PP
3
S
19 tháng 10 2016
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}
19 tháng 10 2016
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
TA
0
AN
25 tháng 4 2017
+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