Ta có:

N=(1+2)(2−1)(22+1)(24+1)...(22008+1)N=(1+2)(2−1)(22+1)(24+1)...(22008+1)

⇔N=(22−1)(22+1)(24+1)...(22008+1)⇔N=(22−1)(22+1)(24+1)...(22008+1)

⇔N=(24−1)(24+1)...(22008+1)⇔N=(24−1)(24+1)...(22008+1)

⇔N=(28−1)...(22008+1)⇔N=(28−1)...(22008+1)

⇔N=24016−1>22016=M

The type of clothes I like the most is the street style because when I wear it I feel very comfortable and make me seem more mature.

She said if these exercises was difficult.

Từ (1), (2) suy ra a=0,6 đâu ra ạ

yeah

yeah

1. We have learned English for 10 years.

=> _____________________ We started learning English 10 years ago. _______________________________________________.

2. It has been a long time since we last met.

=> ____________________ The last time we met was a long time ago.________________________________________________.

3. Ms. Ann hasn’t taken part in any voluntary programs for 4 years.

=> ___________________  The last time Mr.s Ann took part in many voluntary programs was 4 years ago._________________________________________________.

4. I haven’t mer my family since last Christmas.

=> __________________________ The last time I met my family was (the) last Christmas.__________________________________________.

5. How long have you lived here?

=> _______________________ When did you start living here ?_____________________________________________.

6. The volunteers have provided free food and fresh water to homeless people since yesterday.

=> ___________________ The volunteers provided free food and fresh water to homeless people yesterday. _________________________________________________.

7. The doctor has quitted his job in the local hospital and moved to the central hospital for 2 days.

=> _____________________ The doctor quitted his job in the local hospital and moved to the central hospital 2 days ago. _______________________________________________.

8. The children haven’t had a long vacation since last year.

=> ___________________________  The last time the children had a long vacation was last year. _________________________________________.

9. They haven’t visited their parents for 3 months.

=> _____________________ The last time they visited their parents was 3 months ago._______________________________________________.

10. It has been 2 years since we broke up.

=> ___________________ We broke up 2 years ago

What is there near your house?

How much coffee is there in the cup?

How manyboys are there in the class?

How many people has his family got?

How many new books does nam have?

What does nam have to do at home?

When do we have to go to school?

What are they having for dinner?

Who is correcting our exercises?

How long has mr.smith taught us french?