Phân tích đa thức thành nhân tử: 8 ×(x ∧2 +3x+5) ∧2 +7 ×(x ∧2 +3x +5)-15

giải toán bằng cách lập pt(pt bậc hai một ẩn) cần gấp ạ

Một khu đất hình tam giác abc có độ dài cạnh góc vuông ab là 0,4km , độ dài cạnh dóc vuông ac bằng 6/100 ab . Hỏi khu đất đó có S bằng bn héc _ ta

Giúp mình câu c với ạ. Mình cần gấp. Cảm ơn!

II. Choose the correct answer and circle ( Chọn đáp án đúng và khoanh tròn ) Question 15: Like other ethnic people, the Ha Nhi __________ their ancestors A. gather B. hunt C. worship D. recognize Question 16: Some Vietnamese schools make students wear Ao Dai, the __________ dress of Vietnam. A. tradition B. traditional C. traditions D. traditionally Question 17: Can you tell me what is the difference __________ custom and tradition? A. in B. of C. among D. between Question 18: Before beginning the meal, we should __________ for the oldest person to start. A. wait B. to wait C. waiting D. waited Question 19: You don’t have __________ tips for the waiters in Vietnam. A. leave B. leaving C. to leave D. left Question 20: My mother taught me some table __________ when I was young. A. manners B. unities C. prongs D. offsprings Question 21: We reached the house after __________ for almost an hour. A. cycled B. to cycle C. cycling D. cycle Question 22: Our customs are passed __________ from generations to generations. A. down B. up C. to D. over Question 23: Some fortune tellers can read your future by looking __________ your palm. A. to B. in C. at D. for Question 24: I’m so __________ about exploring customs of your country A. excited B. interested C. fond D. keen Question 25: Although I have never been to the place, it has a __________ of belonging to me. A. prong B. palm C. course D. sense Question 26: My teacher paid me a __________ because I finished all difficult tasks. A. cutlery B. compliment C. offspring D. manner Question 27: This filmstrip __________ the daily routines of a typical Vietnamese family. A. reflects B. accepts C. obliges D. sprays Question 28: He __________ try to be more punctual; or else, the manager will get angry. A. must B. should C. need D. may Question 29: He came up with the solution __________ every problems. A. in B. at C. for D. to Question 30: It’s a custom in the USA as people use __________ in all meals. A. cutleries B. offsprings C. belongings D. tips

7. Đây là tiêu chuẩn để phân loại công nghiệp thành hai ngành công nghiệp cơ bản và công nghiệp chế biến.

Chi ra tính đúng đắng sáng tạo trong chủ trương kế hoạch giải phóng Miền Nam

Sử dụng từ trong ngoặc hoàn thành câu

Hãy viết đoạn văn nghị luận với nhan đề "biết kiềm chế cảm xúc của bản thân".

II. Choose the correct answer and circle ( Chọn đáp án đúng và khoanh tròn ) Question 1:The __________ minority peoples have their own customs and traditions. A. ethnic B. cultural C. basic D. diverse Question 2: What is the __________ of the smallest ethnic group? A. ancestor B. group C. majority D. population Question 3: Ao dai is the __________ dress of Vietnamese people. A. major B. special C. traditional D. ethnic Question 4: If you go to Da Lat, you should try some __________ of people here A. specialties B. customs C. costumes D. shawls Question 5: Ethnic people have their own ways __________ farming. A. in B. of C. to D. at Question 6: People living in __________ Sahara have to fight for their living. A. a B. the C. an D. x Question 7: The Viet or King has __________ number of people, accounting for about 86% of the population. A. the largest B. large C. larger than D. the larger Question 8: __________ traditional costume is the most colorful among all people of Vietnam? A. What B. When C. Whose D. Why Question 9: : __________ ethnic group has the larger population, the Tay or Ede? A. Which B. Where C. Who D. How Question 10: People __________ mountainous regions have to travel a long way to town. A. on B. at C. in D. of Question 11: The items on __________ in the Museum of Ethnology are very interesting. A. worship B. display C. diversity D. heritage Question 12: The __________ house is the biggest house in his village. A. community B. communist C. communal D. communicate Question 13: We are watching a Holly __________ of the Hmong people A. waterwheel B. diversity C. ceremony D. group Question 14: Vietnam is a multicultural country. The Vietnamese peoples are __________ but live peacefully. A. diverse B. basic C. boarding D. communal Question 15: Like other ethnic people, the Ha Nhi __________ their ancestors A. gather B. hunt C. worship D. recognize