3^x+3^x+2=270

=> 3^x.(1+3²)=270

=> 3^x.(1+9)=270

=> 3^x.10=270

=> 3^x=270:10

=> 3^x=27

=> 3^x=3³

=> x=3

I am policeman.I love job.

1. What time does Sue get home ?

2.What are there on the table ?

3. Does Lan have English and Math on Friday ?

4. Are there any women in the room ?

5. How does your father travel to work ?

6. Do you have any lessons on Sunday ?

7. Where is the boy ? < chắc thế >

9.What must you do ?

10. What's Mr.Hung doing ?

11. What can your son do ?

12. Do you buy any new books ?

13. What are the children doing ?

14. Who do you often walk to school with ?

16. Is Mr.Quang eating breakfast at the foodstall ?

17.What are the farmers doing ?

19.What is there near your school ?

Mấy câu còn lại mình không chắc lắm nên ko viết nhé,sorry

Hại não @@~

Min doesn't run as fast as Hung.

migrant bạn nhé :3

=> l 2x + 1/3 l = 38/7 - 1/4 

   l 2x  + 1/3 l = 145/28

   2x + 1/3 = 145/28 hoặc 2x + 1/3 = -145/28

Tự làm tiếp nha 

im'portant

Do you like playing sports such as soccer and tennis ?

on