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1. I'd like to have a bigger house.⇒I wish..........................2. I'd like them to keep quiet.  ⇒If only.............................................3. You don't usually clean the floor after meals that's why it is so dirty.⇒ Were...........................................................  4. I'm sorry that I didn't do the homework last night.⇒I wish...........................................................5. You didn't tell me about that so I made him...
Đọc tiếp

1. I'd like to have a bigger house.

⇒I wish..........................

2. I'd like them to keep quiet.  

⇒If only.............................................

3. You don't usually clean the floor after meals that's why it is so dirty.

⇒ Were...........................................................  

4. I'm sorry that I didn't do the homework last night.

⇒I wish...........................................................

5. You didn't tell me about that so I made him sad.

⇒If..........................................................................................  

6. I regret staying up late last night.

⇒If only............................................................................

7. I'm sorry that you can't join in the trip with us.

⇒I wish......................................................................................

8. The weather was very cold, so we couldn't go swimming.

⇒Had the weather..............................................................

⇒Had it.........................................

⇒If………….....................................

9. You are making too much noise.
⇒I wish.........................

10. I'd love to travel abroad when I leave school.

⇒If only........................................................ 

11. It might be a nice day tomorrow. I want to go to the beach.

⇒If......................................................

⇒Should.................................................................. 

12. You should apply for that job.  

⇒If I.....................................

13. I am not a doctor but I want to be a doctor.

⇒I wish...........................

14. I am very busy. I can't talk to you (too)

⇒...................................................................................................

15. You are too young to learn to drive. (enough)
⇒..................................

16. She was so beautiful that everyone looked at her when she entered the room (such)
⇒.................................................................................

17. This table is very heavy. He couldn't move it. (too)
⇒.......................................................................

18. People say that he is a billionaire.

⇒It is....................................
⇒He is ...............................

19. It is rumoured that he got implicated in the robbery

⇒He is...........................................................

20. People believe that she is living happily with her family. ⇒......................................................................................

21. She had just entered the room when it started raining heavily.

⇒ No sooner...........................

⇒Hardly.......................

22. She will never forgive you.  

⇒At no time.........................................

23. A bird is sing on the tree.

⇒On the tree.. ..................................................

24. Helen wrote a novel and made a cowboy film.

⇒Not only.......................................

25. My uncle didn't recognize me until I spoke.  

⇒Not until....................

26. “I am nervous now”, he said   

⇒He said that......................................................................

27. She said to me, “will you come with me to the party tonight?”  

⇒She asked.......................

28. “When are going to visit your parents?”, she asked me  

⇒She wanted to know................................................

29. “Don't move or I'll shoot”, the robber said to the bank manager  

⇒The robber threatened.................................................

30. “Congratulations. You have won the first prize!” she said to me.  

⇒She congratulated...................................

31. “stay here until tomorrow, please” She told me

⇒She asked.........................................

32. Shall we go to the beach this weekend? 

⇒Let's................................................................................................

33. She said such bad things to her mother.

⇒She.....................................................................................

34. I am surethat she didn't go out with him last night.  

⇒She can't.................................................................

35. It is possible that she went to bed late last night.

⇒She might..........................................................................  

36. Shecooked too much food. She didn't need to do so.  

⇒She needn't...……………………………………………………. 

Giúp em với ạ, em cảm ơn! 

1
5 tháng 6 2021

1. I'd like to have a bigger house.

⇒I wish I had a bigger house.

2. I'd like them to keep quiet.  

⇒If only they kept quiet.

3. You don't usually clean the floor after meals that's why it is so dirty.

⇒ Were you to usually clean the floor after meals, it wouldn't be so dirty.

4. I'm sorry that I didn't do the homework last night.

⇒I wish I had done the homework last night.

5. You didn't tell me about that so I made him sad.

⇒If you had told me about that, I wouldn't have made him sad.

6. I regret staying up late last night.

⇒If only I had't stayed up late last night.

7. I'm sorry that you can't join in the trip with us.

⇒I wish you could join in the trip with us.

8. The weather was very cold, so we couldn't go swimming.

⇒Had the weather not been very cold, we could have gone swimming.

⇒Had it not been for the cold weather, we could have gone swimming.

⇒If it hadn't been for the cold weather, we could have gone swimming.

9. You are making too much noise.
⇒I wish you weren't making so much noise.

10. I'd love to travel abroad when I leave school.

⇒If only I would travel abroad when I leave school.

11. It might be a nice day tomorrow. I want to go to the beach.

⇒If it is a nice day tomorrow, I would go to the beach.

⇒Should it be a nice day tomorrow, I would go to the beach.

12. You should apply for that job.  

⇒If I were you, I would apply for that job.

13. I am not a doctor but I want to be a doctor.

⇒I wish I were a doctor.

14. I am very busy. I can't talk to you (too)

 I am too busy to talk to you.

15. You are too young to learn to drive. (enough)
 You are not old enough to learn to drive.

16. She was so beautiful that everyone looked at her when she entered the room (such)
⇒ She was such a beautiful girl that everyone looked at her when she entered the room.

17. This table is very heavy. He couldn't move it. (too)
⇒ This table is too heavy for him to move.

18. People say that he is a billionaire.

⇒It is said that he is a billionaire.
⇒He is said to be a billionaire.

19. It is rumoured that he got implicated in the robbery

⇒He is rumoured to have got implicated in the robbery.

20. People believe that she is living happily with her family.

She is believed to be living happily with her family.

21. She had just entered the room when it started raining heavily.

⇒ No sooner had she entered the room than it started raining heavily.

⇒Hardly had she entered the room when it started raining heavily.

22. She will never forgive you.  

⇒At no time will she forgive you.

23. A bird is sing on the tree.

⇒On the tree singing a bird.

24. Helen wrote a novel and made a cowboy film.

⇒Not only did Helen write a novel but she also made a cowboy film.

25. My uncle didn't recognize me until I spoke.  

⇒Not until I spoke did my uncle recognize.

26. “I am nervous now”, he said   

⇒He said that he was nervous then.

27. She said to me, “will you come with me to the party tonight?”  

⇒She asked if I would come with her to the party that night.

28. “When are going to visit your parents?”, she asked me  

⇒She wanted to know when I was going to visit my parents.

29. “Don't move or I'll shoot”, the robber said to the bank manager  

⇒The robber threatened the bank manager not to move or he would shoot.

30. “Congratulations. You have won the first prize!” she said to me.  

⇒She congratulated me on having won the first prize.

31. “stay here until tomorrow, please” She told me

⇒She asked me to stay there until the next day.

32. Shall we go to the beach this weekend? 

⇒Let's go to the beach this weekend, shall we? 

33. She said such bad things to her mother.

⇒She said to her mother with such bad things??

34. I am surethat she didn't go out with him last night.  

⇒She can't have gone out with him last night.

35. It is possible that she went to bed late last night.

⇒She might have gone to bed late last night.

36. Shecooked too much food. She didn't need to do so.  

⇒She needn't have cooked too much food.

13 tháng 12 2017

\(\dfrac{1}{1-x}\)+\(\dfrac{1}{1+x}\)+\(\dfrac{2}{1+x^2}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=

=\(\dfrac{4}{1-x^4}\)+\(\dfrac{4}{1+x^4}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{8}{1-x^8}\)+\(\dfrac{8}{1+x^8}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{16}{1-x^{16}}\)+\(\dfrac{16}{1+x^{16}}\)

=\(\dfrac{32}{1-x^{32}}\)

8 tháng 8 2015

a) Ta có I 2x - 1 I = 2015

=> 2x-1=2015 hoặc 2x-1=2015

+,Th1: 2x-1=2015

             2x=2015+1

             2x=2016

              x=2016:2

             x=1008

+,Th2: 2x-1=-2015

              2x=-2015+1

             2x=-2014

              x=-2014:2

             x=-1007

Vậy x=1008, x=-1007

 

 

|x-1|<5

th1: x-1<5=> x<6

th2: x-1<-5=> x<-4

vậy x <6 hoặc<-4

|x-1|>5 cũng tương tự như thế

còn mấy câu khác Nguyễn Diệu Thảo làm thế chắc bạn cũng biết cách làm rồi

L_I_K_E CHO MÌNH NHA!!!

a) Chương trình bị lỗi

b) Chương trình bị lỗi

c) Chương trình bị lỗi luôn

26 tháng 7 2019

I I  là dấu giá trị tuyệt đối nhé

26 tháng 7 2019

|7 + 5x| = 1 - 4x

=> \(\orbr{\begin{cases}7+5x=1-4x\left(đk:x\le\frac{1}{4}\right)\\7+5x=4x-1\left(đk:x\ge\frac{1}{4}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}7-1=-4x-5x\\7+1=4x-5x\end{cases}}\)

=> \(\orbr{\begin{cases}6=-9x\\8=-x\end{cases}}\)

=> \(\orbr{\begin{cases}x=-\frac{2}{3}\left(tm\right)\\x=-8\left(ktm\right)\end{cases}}\)

|4x- 2x| + 1 = 2x

=> |4x2 - 2x| = 2x - 1

=> \(\orbr{\begin{cases}4x^2-2x=2x-1\left(đk:x\ge\frac{1}{2}\right)\\4x^2-2x=1-2x\left(đk:x\le\frac{1}{2}\right)\end{cases}}\)

=> \(\orbr{\begin{cases}4x^2-2x-2x+1=0\\4x^2-2x-1+2x=0\end{cases}}\)

=> \(\orbr{\begin{cases}\left(2x-1\right)^2=0\\4x^2-1=0\end{cases}}\)

=> \(\orbr{\begin{cases}2x-1=0\\x^2=\frac{1}{4}\end{cases}}\)

=> \(\orbr{\begin{cases}x=\frac{1}{2}\\x=\pm\frac{1}{2}\end{cases}}\)(tm)

Vậy ...

31 tháng 8 2023

???

6 tháng 4 2019

#It's the moment when you're in good mood, you accidentally click back =.=

1) Calculate

\(P=1\frac{1}{3}.1\frac{1}{8}.1\frac{1}{15}....1\frac{1}{63}.1\frac{1}{80}\)

\(=\frac{4}{3}.\frac{9}{8}.\frac{16}{15}....\frac{64}{63}.\frac{81}{80}\)

\(=\frac{2.2}{1.3}.\frac{3.3}{2.4}.\frac{4.4}{3.5}....\frac{8.8}{7.9}.\frac{9.9}{8.10}\)

\(=\frac{2.9}{10}=\frac{9}{5}\)

7 tháng 8 2019

ta có: 10010 + 1 > 10010 - 1

⇒ A = \(\frac{100^{10}+1}{100^{10}-1}< \frac{100^{10}+1-2}{100^{10}-1-2}=\frac{100^{10}-1}{100^{10}-3}=B\)

vậy A < B

19 tháng 12 2015

a) |2x +1| = 7

Th1: 2x + 1 = 7 

<=> x  = 3

Th2: 2x + 1 = -7 

<=> x = -4 

15 tháng 6 2018

\(1)\) Ta có : 

\(\left|2x-1\right|\ge0\)

\(\Leftrightarrow\)\(A=\left|2x-1\right|+8\ge8\)

Dấu "=" xảy ra \(\Leftrightarrow\)\(\left|2x-1\right|=0\)

\(\Leftrightarrow\)\(2x-1=0\)

\(\Leftrightarrow\)\(2x=1\)

\(\Leftrightarrow\)\(x=\frac{1}{2}\)

Vậy GTNN của \(A\) là \(8\) khi \(x=\frac{1}{2}\)

Chúc bạn học tốt ~ 

15 tháng 6 2018

\(2)\) Ta có : 

\(B=\left|x-3\right|+\left|x-9\right|-1\)

\(B=\left|x-3\right|+\left|9-x\right|-1\ge\left|x-3+9-x\right|-1=\left|6\right|-1=6-1=5\)

Dấu "=" xảy ra khi và chỉ khi \(\left(x-3\right)\left(9-x\right)\ge0\)

Trường hợp 1 : 

\(\hept{\begin{cases}x-3\ge0\\9-x\ge0\end{cases}\Leftrightarrow\hept{\begin{cases}x\ge3\\x\le9\end{cases}\Leftrightarrow}3\le x\le9}\)

Trường hợp 2 : 

\(\hept{\begin{cases}x-3\le0\\9-x\le0\end{cases}\Leftrightarrow\hept{\begin{cases}x\le3\\x\ge9\end{cases}}}\) ( loại ) 

Vậy GTNN của \(B\) là \(5\) khi \(3\le x\le9\)

Chúc bạn học tốt ~