Tính giá trị biểu thức:

Xác định a; b; c; d biết đẳng thức sau đúng với mọi x

\(x^3-ax^2+bx-c=\left(x-a\right)\left(x-b\right)\left(x-c\right)\)

Use the correct form of the words in the boxes to complete the sentences in each group A-G below. You may use some of the words more than once. In some cases, more than one word maybe correct.

A. rise, raise, arise, lift

1. Should the need __________, we’ll order more food for the extra guests.

2. The charity organisation __________ enough money to build a shelter for the refugees.

3. The sun __________ in the East and sets in the West.

4. We __________ at seven every weekday to get ready for school.

5. Can you __________ the table so that I can slide the rug underneath?

B. educate, learn, teach, study, read, instruct

1. I always __________ a book just before I go to sleep.

2. John was __________ in France, so his French is very good.

3. Michelle works in the gym __________ people how to use the equipment properly.

4. In my final year I had to __________ at least four hours every day to __________ everything that was required fir the exams.

5. I __________ Physics and Maths at the local high school.

6. The examiner __________ us to pick up our pens once we had __________ the questions carefully.

C. behaviour, attitude, temper, mood, manner, manners

1. My parents had to see ghe headmaster because of my bad __________ in class.

2. After the argument, Jake was in a bad __________ and wouldn’t speak to anyone.

3. If Betty wants to keep her job, she must change her __________ towards her boss.

4. Where did you learn such excellent table __________?

5. The children like him because of his gentle __________.

6. Cliff is so calm that I have never seen him lose his __________.

7. What you’re saying should be done in a professional __________.

D. familiar, accustomed, aware

1. I hope you’re __________ of dangers involved in rock climbing.

2. Is anyone in this classroom __________ with the word “incubator”?

3. That woman look __________ to me. I’m sure I’ve seen her before.

4. Paul is feeling tired because he’s not __________ to working for so long without a break.

E. custom, habit, fashion, trend, routine

1. Going to work has become a daily __________ for most people.

2. The general __________ for men in the 1970s was to have long hair and sideburns.

3. In many countries it is the __________ to roast turkey for Christmas.

4. Sandra has the bad __________ of biting her nails.

5. Slightly flared trousers are in __________ this year so many people are wearing them.

6. If you go shopping, definitely go to Blare’s. They’ve got all the latest __________.

F. common, ordinary, usual, normal, regular

1. It is __________ to feel weak when you are ill, even if you’re just got a __________ cold.

2. __________ exercise means working out fir one hour at least twice a week.

3. It was a(n) __________ weekend. We went to the cinema on Saturday evening and for a drive Sunday morning, as __________

4. I get on very well with my friends because we have many many things in __________.

G. eager, keen, enthusiastic, interested, willing

1. I am __________ to help you with your homework if you make an effort.

2. He’s really __________ on heavy music. That’s all he listens to.

3. Please sit down as I’m __________ to start the meeting.

4. Billy is a(n) __________ tennis player, so he plays tennis every afternoon.

5. Sheila is __________ in taking up gardening this spring.

6. We were __________ about going to Ireland for Christmas.

Choose the correct option A, B, C, or D to complete the following sentences.

1. received law degrees as today.

A. Never so many women have

B. Never have so many women

C. The women aren't ever

D. Women who have never

2. Nylon was the human-made fibers.

A. the first of which

B. what the first of

C. it the first of

D. the first of

3. Newspaper publishers in the United States have estimated reads a newspaper every day.

A. nearly 80 percent of the adult population who

B. it is nearly 80 percent of the adult population

C. that nearly 80 percent of the adult population who

D. that nearly 80 percent of the adult population

4. The ancestors of the horse lived and were about half a meter tall.

A. years ago 60 million

B. 60 million years ago

C. ago 60 million years

D. million years ago 60

5. The trumpet is of most dance and jazz bands.

A. an important part

B. partly important

C. what part is important

D. is important a part