Cho ΔABC cân tại A. Kẻ BH vuông góc với AC tại H và CK vuông góc với AB tại K. Chứng minh:

a. BK = CH

b. ΔAKH cân

c. Gọi I là giao điểm của BH và CK. Chứng minh AI là tia phân giác của góc BAC

Help me ><

Complete the sentences using one of the words given in the box. Use each word only once.

a."Road to Olympia" is contest of _____________ that interests a lot of TV viewers.

b."Please, _____________ the television, if you aren't watching it."

c. They usually __________ the weather forecast after the news.

d."There's a __________ movie and a cartoon on this evening. Which one would you like to see?"

e.Young children always like watching ____________ like "Tom and Jerry" series.

f. There are many different TV programs for the __________ to choose from.

g. I saw the movie "Alice in Wonderland" on TV last night. It was about the _____________ of a young girl in the wonderland.

h. In some ____________, TV viewers can join in and answer the questions by telephone or email.

i. Years ago, villagers used to ___________ in the house of the TV owner and watch TV programs in balck and white.

j. The BangtanBoys is the favorite ________________ of many teenagers.

Help me ><

(x-1).(3x-6)=0

=>x-1=0 hoặc 3x-6=0

=> x=1 hoặc x=2

Hi mn!

Vòng 1 đã kết thúc, và giờ chúng ta sẽ chuyển sang vòng 2!!!