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17 tháng 10 2019

c) x\(^5\)+x+1

= x\(^5\) - x\(^2\) +x\(^2\) + x + 1

= ( x\(^5\) - x\(^2\) ) + (x\(^2\) + x + 1)

= x\(^2\)(x\(^3\) - 1) + (x\(^2\) + x +1)

= x\(^2\)(x - 1)(x\(^2\) + x +1) + (x\(^2\) + x + 1)

= (x\(^2\) + x + 1)[x\(^2\)(x - 1) +1]

24 tháng 10 2019

Cảm ơn cậu nhá haha

23 tháng 8 2019

1,B

2,D

23 tháng 8 2019

Choose the best answer:

1. _____ do you expect to have the work completed?

A. When B. What C. Who D. How far

2. _____ love is such ____ beautiful thing.

A. A - x B. x - a C. The - a D. A - the

Chúc bạn học tốt

1 tháng 11 2019

1. things/ are/ a lot of/ there/ like/ i/my/free time/ to do/in

i like

2. usually /Annie/throws away /stamps/common/the

Annie usually common the stamps throws away

3. often/do/you/how/exercise/and/so sport?

how do you often exercise and so sport?

4, started / how to play/i/learn/to/three weeks / the guitar/ago.

i started learn how to play the guitar to three weeks ago

5.is/one of/drawing/leisure/her/activities

4 tháng 11 2019

1. There are a lot of things i like to do in my free times.

2.Annie usually throws away the common stamps.

3.How often do you exercise and so sport.

4.I started to learn how to play the guitar three weeks ago.

5.Drawing is one of her leisure activities.

3 tháng 1 2018

X. Complete the sentences with “tell, say, speak, talk, ask” and their correct forms.

1. Be quite, I have something to.........................say......................

2. The President refused to...........................talk............................... to waiting journalists.

3. I had to.................ask..................... the teacher what to do next.

4. Are you.................telling.................. me you didn’t have any help with this?

5. Ann and Joe aren’t ...................talking..................... to each other right now.

6. How old are you – if you don’t mind my................asking.................... ?

7. He is...................said................... to have been a brilliant scholar.

8. He.............told......................... everybody he saw the news.

9. We looked around the school and..................talked.................. with the principal.

10 I’ve...................told................... to the manager about it.

18 tháng 12 2017

1. Nobody has told me about that.

→→ I've never heard that before.

2. They have sold that old house.

→→ That old house has been sold.

3. People think that your student broke the window.

→→ It is thought that your student broke the window.

5. "Try to cut down on your drinking." I said to him.

→→ I suggested to him that he try to cut down on his drinking.

20 tháng 12 2017

CONDITIONAL SENTENCES

I. Rewrite the following sentences, using an "if" construction.

1. The pupils will learn hard. They will pass the coming exams

If the pupils learn hard, they will pass the coming exams.

2. He doesn't take any exercise; that's why is so unhealthy.

If he took exercises , he wouldn't be unhealthy.

3. I didn't know your number so I didn't ring.

If i had known your number, I would have phoned.

4. I have no ladder so I can't get over the wall.

If I had a ladder, I could get over the wall.

5. My friends will have time. They will come visit me.

If my friends have time , they will come visit me.

6. We haven't got central heating, so the house is rather cold.

If we had got central heating , the house wouldn't be rather cold.

7. We don't go by air because We didn't have enough money.

If we had had enough money, we would go by air.

8. I am fat; that's why I can't get through the bathroom window.

If I wasn't fat, I could get through the bathroom window.

9. He ​wasn't looking where he was going. That's why he was run over.

If he hadn't been looking where he was going , he wouldn't have been run over.

10. The bus didn't stop because you didn't put your hand up.

If you had put your hand up, the bus would have stopped.

20 tháng 12 2017

Bạn ơi, cho mình hỏi, ở câu 7 có phải have chuyển thành had không. Tại mình thấy có 2 từ had

10 tháng 3 2019

1. If / sister / not / take care / the garden everyday / there / not / flowers.

=> If your sister doesn't take care of the garden everyday, there won't have any flowers.

2. Households / dump / waste / river / so / it / polluted.

=> Households are dump waste into the river so it is polluted.

3. The boys / have / stop / play / volleybal / because it / rain / heavily.

=> The boys have to stop playing football because it rains heavily.

4. If / weather / fine, they / go / picnic.

=> If the weather is fine, they will go to a picnic.

5. If I / be / father, I / buy / new car / travel.

=> If I were my father, I would buy a new car to travel.

6. Polluted water / lead / death / fish / lake.

=> Polluted water leads to the death of fish in the lake.

7. Mother / tired, so she / not / go / work.

=> My mother is tired, so she doesn't go to work.

8. If / sister / do / exercise. he / be / healthier.

=> If my sister does exercise, she will be heathier.

9. If / there / be / no fresh water what / happen.

=> If there wasn't no fresh water, I don't know what will happen. (???)

10. People / get / more diseases if water / contaminated.

=> People will get more diseases if water is contaminated.

11. Acid rain / make / plant / die.

=> Acid rain makes plant die.

10 tháng 3 2019

Bn ơi sao có mấy câu mk thấy nó là lạ. Như câu 2 á: đã are thì phải dumping chứ nhỉ. Vs câu 3 hình như là ...because it's raining heavily. Ngữ pháp tiếng anh của mk ko tốt lăm nên bn giải thích giúp mk đc ko?

5 tháng 12 2018

2.Yesterday/John/yo/went/late/school/because/stuck/was/he/the/in/jam/traffic.

→→ Yesterday, John went to school late because he was in the stuck traffic jam

3. Lan/Mai/and/been/friends/have/five/years/for.

→→ Lan and Mai have been friends for five years

4. tallest/the/giraffe/is/in/world/the/animal.

→→ giraffe is the tallest animal in the world

5. Hung/not/fat/is/as/as/brother/his.

Hung is not as fat as his brother

#Yumi