Tìm các giá trị của tham số thực m để phương trình x²+(2 m - 1 )x + m²- 1 =0 có 2 nghiệm phân biệt x1 x2 sao cho b = x1² + X2² đạt giá trị nhỏ nhất

a, P(x) = 2x^4+3x^3+3x^2-x^4-4x+2x^2+6x Q(x) = x^4+3x^2+5x-1-x^2-3x+2+x^3 b, P+Q P-Q

Chứng minh giúp mk 2 bài này ko cần vẽ hình nha hứa vote 5sao

Bạn An viết dãy số 3,18,48,93,153 a) Tìm số hạng thứ 100 của dãy b) Số 11703 là số hạng thứ bao nhiêu của dãy

Tìm các giá trị của tham số thực m x² + (2m-1) x +m²-1để phương trình có 2 nghiệm phân biệt x1 x2 Biết P= x² +x²giá trị nhỏ nhất nhỏ nhất

91. He (have) ……… a bad fall while he (repair)………his roof. 92. By the end of this month, I hope, I (write)……………………200 pages of my new novel. 93. It (take)…….a moment before Nick (realize)…………...he (offer)……… a cigarette by the stranger. 94. While he ( learn)……. to drive he (have)……… 25 accidents. 95. It’s no using getting inpatient. The plane (not arrive)……..until the weather (clear)……up. 96. I (think) ……..about you a lot lately and I (come)……… to the conclusion that I( not be) ……..able to live without you. 97. I don’t mind ( wait)………I’d rather (be)……………….too early than too late. 98. Those students who (fail)………the exam are going to take another one held in August. 99. “ I am just going out to get an evening paper.” “ But it (rain)……….Why you (not wait)…………….. till the rain (stop)………? 100. I (think)……… your father’s health (improve)………so much since I (see)……him last.

3.3. Synonyms and antonyms Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 1. Many scientists agree that global warming poses great threats to all species on Earth. A. risks B. annoyances C. fears D. irritations 2. When their rent increased from 200 to 400 a month, they protested against such a tremendous increase. A. light B. huge C. tiring D. difficult Mark the letter A, B, C or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions 1. Punctuality is imperative in your new job. A. Being late B. Being cheerful C. Being courteous D. Being efficient 2. We’d better speed up if we want to get there in time. A. slow down B. put down C. turn down D. lie down 3.4. CONVERSATION 1. Jim: “What about collecting used paper, bottles and plastic bags everyday?” Ha and Mai: “ _______ ” A. Because they can pollute the environment B. How come? Who can do that? C. That’s a very good idea. Let’s do that. D. What about this weekend 2. Phuong: “I’m taking my TOEFL test tomorrow” Daisy: “ ____________ ” A. Good fortune B. Good luck C. Good outcome D. Good success

77. My father (fight)…………. for 4 years in the last war. 78. I’m taking my daughter out tonight. She (not have)…………..fun for a long time. 79. When I (look)………… at my suitcase, I could see that somebody (try)……….to open it. 80. When we (get)…………. to the restaurant, we (find)……….that nobody (remember)…………………..to reserve a table. 81. The doctor (examine)……….him, and that he (break)………..his arm. 82. As soon as she arrived England, she (find)……..that the language (be)……quite different from the English that she (learn)………………..at school. 83. I’m going to bed. I (work)………………..for hours and I’m tired. 84. Good afternoon. Can I help you? – Yes. I (bring)……………...my watch to youfor repair 3 weeks ago. Is it ready yet? 85. I wanted to be the first to tell her the news, but I was too late. Someone (already tell)……………………her. 86. He (come) ………in to the room a moment after I (get)……. there. 87. I hardly (be)………there 5 minutes when Mrs. Brown (come)…………in with the coffee. 88. Scarcely they (move)…………….. into the new house when their friends (come)……..in. 89. I (meet)……………...John before I (be)…………….. a fortnight in Paris. 90. He no sooner (reach)……..the door than he (come)…….back.

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Surprising that tool down rely shape home because which being Bau Truc pottery village of Cham village ethnic minority is one of the oldest pottery villages in Southeast Asia . It's located about 10 km in the South of Phan Rang town . The small village is (1)_______ to more than 400 families, of (2)________ 85% are in the traditional pottery business. The style is said to be handed (3) _______ from Po Klong Chan , one of their ancestors from the immemorial time. People in Bau Truc use their skillful hands , bamboo-made circles and shells to create priceless work. It is (4)________ that while the Kinh people have switched to using wheel as an indispensable (5)_________ their Cham counterparts , on the contary, still (6) _______ on talent hands and simple tools . To create a pottery product, a Cham craftsman only needs an anvil, not a potter's wheel , and other simple equipment and moulds and then uses hands to (7)_______ pieces of clay into the works he wants . The clay is taken from the banks of the Quao River and is flexible , durable when (8)_________ fired. The skills needed to mix sand with the clay are also various. The amount of sand mix with the plastic material is dependent on what the pottery used for and the sizes. For these seasons , Bau Truc pottery is quite different from pottery elsewhere. For example , water jars made in Bau Truc pottery are always favoured by people in dry and sunny areas (9)_____the temperature of the water in the jars is always one centigrade than (10)_____ outside