\(A=3x+12\)

\(=3\left(x+4\right)\)

\(B=\left(x+1\right)\left(x^2-64\right)\)

\(=\left(x+1\right)\left(x^2-8^2\right)\)

\(=\left(x+1\right)\left(x+8\right)\left(x-8\right)\)

\(C=x^2-256\)

\(=x^2-16^2\)

\(=\left(x-16\right)\left(x+16\right)\)

5. C. play => playing

6. A. like => likes

5. C. play -> playing

Cấu trúc: interested in + N/ V-ing

6. A. like -> likes

Cấu trúc chắc bạn biết r :vv chia động từ thêm s/es vào với chủ ngữ là he she it

1.started smoking cigarettes a month ago

2. to walk at twenty minutes to school every morning

3.I haven't seen my uncle for two years 

4.going to the movies tonight?

5.so stayed at home from school yesterday

6.me three hours to make...

7.gardening at the weekend

8.để nguyên vế sau

10.watching...

11.Minh ....

12.seen her since 2001

1. The last time he smoked was a month ago

2. it takes me twenty minutes to walk to school every morning.

3. I haven't seen my uncle for two years

4. Let's go to the movies tonight.

5. July had a high fever, so she stayed home from school yesterday.

6. I spent three hours making this pottery jug

7. My father enjoys gardening at the weekend

8. What about going swimming this afternoon?

9. My father is interested in playing board games.

10. He enjoys watching football very much.

11. Because Minh was sick, she could not go to school.

12. We haven't seen her since 2001

nNaOH = 16/40 = 0,4 (mol)

PTHH: 2NaOH + SO2 -> Na2SO3 + H2O

Mol: 0,4 ---> 0,2 ---> 0,2

VSO2 = 0,2 . 22,4 = 4,48 (l)

mNa2SO3 = 0,2 . 126 = 25,2 (g)

36. It is a long table

37. Does your family have four people?

38. What is your brother's job?

39. She sometimes goes to school on foot

40. Where does she live?

they had to work in a quiet office

Bạn đọc lại câu hỏi giùm mình, đừng trả lời bừa

I wish they didn't have to work in a noisy office.

Câu này thêm chủ ngữ I vào đắng trước và làm theo cấu trúc câu ước là được em nhé!