giải X∈ (-∞)
-X(x+1)+2(x+1) + x²-2x-1=0
⇒x ∈ 0
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Toppic tiếng anh : Describe activitics you and you an your family often do a Tet. ( about 80 words )
I. Listen to the passage and put True/ False for these statements: 1.People drink a lot of tea. 2.Chinese pcople don't drink tea. 3. In Viet Nam, some people especially old people like black tea. 4.Japanese and Korean both drink tea. 5.Green tea leaves are bought from the market. PART B: PHONETICS, VACABULARY AND GRAMMAR 1. Choose the word that has the underlined part pronounced differently from the others. A. candy B. fantastie 2. Choose the word with the different main stress pattern. C. cinema D. popcorn A. elderly B. orphan C. collect D. rubbish Choose the word or phrase that best complete each sentence. (2.5pts ) 3. Cham Towers in NinhThuan province .......... by tourists all over the world every year. A. is visited B. are visit C. visited D. are visited 4. Junk foods are high in fat, sodium and sugar, which can lead to A. fever B. allergy C. obesity D. stomachache 5. Classical music is not A. as exciting so C. more exciting as 6. My brother and I A. visited 7. "What would you like to drink now?" - ". A. Yes, please C. Tea, please 8. If you want to be fit, stay outdoors more and do more A. physics pop and rock. B. as exciting as D. the most exciting as .........Da Lat recently. B. will visit C. has visited D. have visited B. No, thanks D. I like nothing to do activities. B. physic C. physical D. physically 9. I join a photography club, and all members love A. take B. taking C. make D. making Choose the word that is not correct. Huong Pagoda were visited by my mother and her friends last month. C 10. A B D I. Choose the word which best fits each gap. famous dish, but bun cha is the top choice when it comes to Pho might be Vietnam's (1) lunchtime in Hanoi. It doesn't matter if you eat bun cha in a restaurant or a small cart on the street, you will be (2) by a plate of vermicelli (bun), a bowl of broth with grilled pork and a (3) of fresh herbs. The vermicelli and fresh herbs are pretty common ( 4) a Bun cha Vietnamese restaurant. The broth and the pork are the ones that make this dish (5)
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Cho y = f(x) = 2x-6 a)Tìm f (-10); f (30) b) Tìm x biết y = 3
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