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12 tháng 2 2017

Do n+3\(⋮\)n+3 (*) => (n+3)2\(⋮\)n+3 hay n2+6n+9\(⋮\)n+3

=> n2+6n+9-(n2-7)\(⋮\)n+3 hay 6n+16\(⋮\)n+3

Từ (*) => 6n+18\(⋮\)n+3

=> 6n+18-(6n+16)\(⋮\)n+3 hay 2\(⋮\)n+3

=> n+3 \(\in\){-2;-1;1;2}

Vậy n \(\in\){1;2;4;5}

12 tháng 2 2017

Ta có: \(n^2-7⋮n+3\Leftrightarrow n^2-9+2⋮n+3\Leftrightarrow\left(n-3\right)\left(n+3\right)+2⋮n+3\)

\(\Rightarrow\)\(2⋮n+3\)

Vậy n+3 là Ước của 2

Ta có bảng sau: 

n+312-1-2
n-2-1-4-5

Vậy n=....

25 tháng 7 2023

bn ơi đề bài là chuyển về cái gì thế

31 tháng 1 2022

21 post office

22 address

23 museum

24 woman

17 tháng 9 2021

Dịch :

Nếu em yêu anh thì sao ? em yêu anh đến mức em ko muốn mất a . Thế nên xin đừng rời xa e ...

Dịch

Nếu em eww anh thì seo? 

Em yêu anh đến mức em ko muốn mất a.

Thế nên đừng rời xa em.

Học tốt nò

cho toy nó.

9 tháng 4 2019

1. Hung up or you will be for work

If you do not ......... Hung up,you will be for work.......

2. I might be late. If so, let's start with our me

If I am late ,I won't start with our me

4. I'll call the police. If you don't leave me alone

I'll call the police unless you don't leave me alone

5. In this now weather we don't go to school

If it is not ????

6. You drink too much coffice that's why you can't shop

If you do not drink too much coffice, you can shop

Turn the following sentences into indirect speech.1. "Don't forget to post the letter," he said to me.___________________________________________________________________________________2. "I am visiting Hoi An now," Nhi said.___________________________________________________________________________________3. "Can you open your bag, please ?" said the customer officer.___________________________________________________________________________________4. "I don't know how to do this exercise,"...
Đọc tiếp

Turn the following sentences into indirect speech.

1. "Don't forget to post the letter," he said to me.

___________________________________________________________________________________

2. "I am visiting Hoi An now," Nhi said.

___________________________________________________________________________________

3. "Can you open your bag, please ?" said the customer officer.

___________________________________________________________________________________

4. "I don't know how to do this exercise," Johnny said.

___________________________________________________________________________________

5. "I must stay at home tomorrow," she said.

___________________________________________________________________________________

6. "Do you like this place ?" Hoa asked Tim . "No, I don't," Tim said.

___________________________________________________________________________________

7. "The clock will never work again if you try to repair it," the man said to Nam.

___________________________________________________________________________________

8. "Is Mount Everest the highest mountain in the world ?" the teacher asked Nga. "Yes, it is," she replied.

___________________________________________________________________________________

9. "Are you going to visit Phong Nha Cave ?" Hoa said to Nga.

___________________________________________________________________________________

10. "Send me a postcard when you arrive in Paris," Jane said to Tim.

___________________________________________________________________________________

 

1
29 tháng 11 2016

Turn the following sentences into indirect speech.

1. "Don't forget to post the letter," he said to me.

-> He told me not to forget to post the letter.

2. "I am visiting Hoi An now," Nhi said.

-> Nhi said that she was visiting Hoi An then.

3. "Can you open your bag, please ?" said the customer officer.

-> The customer officer asked me if I could open my bag.

4. "I don't know how to do this exercise," Johnny said.

-> Johnny said that he didn't know how to do that exercise.

5. "I must stay at home tomorrow," she said.

-> She said that she had to stay at home the next day.

6. "Do you like this place ?" Hoa asked Tim . "No, I don't," Tim said.

-> Hoa asked Tim if he liked that place and Tim said that he didn't.

7. "The clock will never work again if you try to repair it," the man said to Nam.

-> The man told Nam that the clock would never work again if he tried to repair it.

8. "Is Mount Everest the highest mountain in the world ?" the teacher asked Nga. "Yes, it is," she replied.

-> The teacher asked Nga if Mount Everest was the highest mountain in the world and she said yes.

9. "Are you going to visit Phong Nha Cave ?" Hoa said to Nga.

-> Hoa asked Nga if she was going to visit Phong Nha Cave.

10. "Send me a postcard when you arrive in Paris," Jane said to Tim.

-> Jane told Tim to send her a postcard when he arrived in Paris.

4 tháng 7 2019

Câu 8 phải là The teacher asked Nga if Mount Everest was the highest mountain in the world and she said that it was.vui

answer

ok i will make friends with you

Study well

remember k

4 tháng 8 2019

Đáp án D

Giải thích: cấu trúc hesitate to V: chần chừ làm gì

Dịch: Nếu bạn cần giúp đỡ, đừng ngại hỏi.

4 tháng 2 2016

Tôi cần sự giúp đỡ của bạn ... xin vui lòng giúp đỡ tôi nếu bạn miễn phí ... Tôi muốn mô tả một công viên, nó là đẹp và nó có rất nhiều cây xanh, nhưng tôi không biết làm thế nào để làm cho nó dài và mất rất nhiều người thích nó

3 tháng 2 2016

Online Math trừ điểm đi

17 tháng 4 2023

I don't know what I (do) .would do.. if you (not be) ...were not... here to help me.