c/m (a+b+c)^3=a^3-b^3-c^3=3(a+b)(b+c)(a+c)

x^2-4xy+5y^2=100 tìm x,y

Rewrite this following sentences 

28. Where did you get the information about Disneyland Resort? (find)

29. What time did you get out of bed this morning? (up)

30. I'll read this leaflet to see what activities are organised at this attraction. (look)

31. They're going to publish a guidebook to different beauty spots in Viet Nam. (out)

32. I'm thinking with pleasure about the weekend! (forward)

33. I don't remember exactly when my parents started this workshop. (set up)

34. We have to try harder so that our handicrafts can stay equal with theirs. (keep up with)

35. What time will you begin your journey to Da Lat? (set off)

36. We arranged to meet in front of the lantern shop at 8 o'clock, but she never arrived. (turn up)

37. The artisans in my village can earn enough money from basket weaving to live. (live on)

2. We often get up early in the morning. We want to go to school on time. (so that)
3. We should reduce the amount of garbage. We can help to protect the environment. (in order
that)
4. My sister practices playing the piano every day. She can become a good pianist. (in order
to)
5. We are trying to learn hard. We want to pass the final exam. (in order to)
6. I have read this book many times. It is very interesting. (since)
 

1. Artisans have to follow more than ten stages. They can make a simple conical hat. (so that)