a/ Tìm 3 số tự nhiên liên tiếp, biết tích 2 thừa số sau hơn tích 2 thừa số đầu là 26.

b/ Tìm 3 số tự nhiên lẻ liên tiếp, biết tích 2 thừa số sau hơn tích 2 thừa số đầu là 44

(x + y) . (x^2 - xy + y^2). Khi x^3 = 1 - y^3

(x+1) . (x-3) = x^2 + 4

Use the correct of the words in brackets

1. He will help me learn English more ...... (easy).

2. My mother likes ...... bread in her free time. (make)

3. Please don't give your ...... information to strangers. (person)

4. Her ...... often makes us irritated. (explain)

5. You must use your ...... to write the essay. (imagine)

6. Exercise make our bones ...... . (strength)

7. If we do exercise ......, we will have less depression. (regular)

V. Each sentence has a mistake. Find it and correct it

1. You should able to improve your English

2. I don't mind to give a hand to the poor 

3. You must see the positive sides of use the computer 

4. I spend most my spare time looking after the garden

5. That book sounds greatly

6. We work volunteers for an animal organnisation 

7. I was kind of addicted to the net 

8. Computers play important part in our lives 

giúp tuoi, tuoi cho kẹo <3

V. Each sentence has a mistake. Find it and correct it

1. You should able to improve your English

2. I don't mind to give a hand to the poor 

3. You must see the positive sides of use the computer 

4. I spend most my spare time looking after the garden

5. That book sounds greatly

6. We work volunteers for an animal organnisation 

7. I was kind of addicted to the net 

8. Computers play important part in our lives 

giúp tuoi, tuoi cho kẹo <3

V. Each sentence has a mistake. Find it and correct it

1. You should able to improve your English

2. I don't mind to give a hand to the poor 

3. You must see the positive sides of use the computer 

4. I spend most my spare time looking after the garden

5. That book sounds greatly

6. We work volunteers for an animal organnisation 

7. I was kind of addicted to the net 

8. Computers play important part in our lives