chuyển sang câu trực tiếp

1. The visitor asked me where I came from
2. ms. nga wanted to know what time the movie began

3. mary said she had been there day before

4. mai asked quang when he would come back

5. she told me to pick her up at six o'clock

6. Hung said that his girlfriend and he were getting and married the next day

7. he asked me when I had arrived there

8. mr.david said he hadn't seen her the night before

9. julia said that she was going to there  at noon

10. tom told me that his mother was in hospital

11. I asked him how far it was from my school to the post office if I went there by taxi

12. they asked me if I could do some shopping with them
13. her mother told her not do go out with him the day before
14. she said that the books in the library would be avaiable the next day

15. he asked her to think about that example again because it needed correcting

đặt nhân tử chung
\(2x-7\sqrt{x}+3\)

rút gọn
\(\sqrt{17+12\sqrt{2}}-\sqrt{17-12\sqrt{2}}\)

phân tích đa thức thành nhân tử
\(x-6\sqrt{x}+8\)