Bài 2: Giải các phương trình sau:

a. (3x + 2)(x² – 1) = (9x² – 4)(x + 1)

b. x(x + 3)(x – 3) – 5(x + 2)(x² – 2x + 4) = 0

c. x(x + 3)(x – 3) + 5(x – 3) = 0

d. (3x – 1)(x² + 2) = (3x – 1)(7x – 10)

E1. Write the correct form of the verb in brackets:

1. You (earn)___________________ a lot of money.

2. You (travel)___________________ around the world.

3. You (meet) ___________________ lots of interesting people.

4. Everybody (adore) ___________________ you.

5. You (not / have) ___________________ any problems.

6. Many people (serve) ______________________ you?

7. They (anticipate) ___________________ your wishes.

8. There (not / be) ___________________ anything left to wish for.

9. Everything (be) ___________________ perfect.

10. But all these things (happen / only) _______________ if you marry me.

1 When I (get) _______ home last night, I (be) ________very tired and I (go) ____________ straight to bed.

2. A: (you/ finish) _____________________ painting the bedroom?

B: Not yet. I'll finish it tomorrow.

3. George (not/be) _____________________ very well last week.

4. Mr. Clark (work) _____________________ in a bank for 15 years.

5. Molly lives in Dublin. She (live) _____________________ there all her life.

6. A: (you/ go) _____________________ to the cinema last night?

B: Yes, but it (be) _______ a mistake. The film (be) _______ awful.

7. My grandfather had died before I was born. I (never/ meet) _____________________ him.

8. I don't know Carol's husband. I (never/ meet) ____________ him.

9. A: Is Martin here?     B: No, he (go) ___________________ out.

A: When exactly (he/ go) _____________________ out?

10. The police (arrest) _____________________  two people early this morning.

11. She (go) ________ Japan but now she (come)__________ back. 

12. Dan (already/ buy)____________________ two tablets this year.  

13. How many games (your team/ win)_______________________ so far this season?

14. (you/ visit)_______________________ the CN Tower when you (stay)______________________ in Toronto?

15. (you/ do)____________________ your homework yet?

    – Yes, I (finish)______________________ it an hour ago. 

16. There (be)____________________ an accident in High Street, so we have to use King Street to get to your school.

17. I (not/ see)________________ Peter since I (arrive)__________ last Tuesday.

18. Frank (get) __________________ his bike last May. So he (have) ____________________ it for 4 months.

19. I'm sorry, I (not/ write)___________________ earlier, but I (work) _____________________ a lot lately.  

E2. Are the underlined parts right or wrong? Correct the wrong

1. I've lost my key. I can't find it anywhere. -> Right

2. Have you eaten a lot of sweets when you were a child?  -> Did you eat

3. I've bought a new car. You must come and see it. ->

4. I've bought a new car last week. ->

5. When have you been yesterday evening?  ->

6. Lucky has left school in 1999. ->

7. I'm looking for Mike. Have you seen him? ->

8. Have you been to Paris? "Yes, many times" ->

9. I'm very hungry. I haven't eaten much today. ->

10. When has this book been published. ->

1. This last time she came back to her hometown was 4 years ago.

-> She hasn't.......................................................................................

2. He started working as a bank clerk 3 months ago.

-> He has...........................................................................................

3. It has been 5 years since we first flew to Singapore.

-> We have........................................................................................

4. I last had my hair cut in November.

-> I haven't........................................................................................

5. The last time we called each other was 5 months ago.

-> We haven't....................................................................................

6. It is a long time since we last met.

-> We haven't.....................................................................................

7. When did you have it?

-> How long.......................................................................................?

8. This is the first time I had such a delicious meal.

-> I have never.....................................................................................

9. I haven't seen him for 8 days.

-> The last............................................................................................

10. Today is Saturday. I haven't taken a bath since Wednesday.

-> It is...................................................................................................

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