.................................gấp

cho tam thức bậc 2 f(x)=ax^2+bx+c, a khác 0. Chứng minh rằng nếu tồn tại một số thực a sao cho a.f(a)<=0 thì phương trình f(x) =0 luôn có nghiệm

1.I would like ____________(come) to the party with you. (1 Point) Enter your answer 2.She helped me ______________(carry) my suitcases. (1 Point) Enter your answer 3. He decided ________________(study) biology. (1 Point) Enter your answer 4. He asked ___________(come) with us. (1 Point) Enter your answer 5.I promise _____________(help) you tomorrow. (1 Point) Enter your answer 6.She agreed _________________(bring) the pudding to the dinner. (1 Point) Enter your answer 7. We hope________________(visit) Amsterdam next month. (1 Point) Enter your answer 8.He's afraid (stay)_________________________ home alone at night (1 Point) Enter your answer 9.I'm very pleased(see)_____________________ you here. (1 Point) Enter your answer 10.I was sorry (hear)____________________- that your father is ill. (1 Point) Enter your answer 11.They plan _______________ college in the autumn. (1 Point) starting to start start to starting 12.She tried ____________________ the book on the high shelf but she was too small. (1 Point) reaching to reaching to reach reached 13.They will stop ________________ lunch at twelve. (1 Point) having to having had to have 14.Please don't forget _________________ some juice on your way home. (1 Point) to picking up pick up picking up to pick up 15.I am delighted that you _______________ your exam. (1 Point) are passing will pass passed had passed 16.They were excited ____________________ about the birth of her baby. (1 Point) hearing heard to hear has heard 17.Ted was surprised ______________________his computer shutting down. (1 Point) seeing to see saw has seen 18.It was strange____________________her after all this time. (1 Point) to see seeing saw has seen 19.Unfortunately, I was unable _______________ for over a week. (1 Point) working to working to work worked 20.It is essential that he ____________ hard. (1 Point) studies study studying to study 21.He thinks that he'll get the star role in the film --> He expects_________________________________ (1 Point) Enter your answer 22.My parents insist that I study hard. -->My parents want _____________________ (1 Point) Enter your answer 23."Why don't you ask her yourself?” --> My friend suggests that_______________ (1 Point) Enter your answer 24.An accountant needs to master computer science. -->It is necessary that_______________________ (1 Point) Enter your answer 25.We are going to clean the environment. We are ready. --> We are ready__________________________________________________ (1 Point) Enter your answer 26.Keeping people from littering is very difficult. --> It is _____________________________________________________ . (1 Point) Enter your answer 27.They hear about the plan to collect the used boxes. They are surprised. --> They are___________________________________________________ . (1 Point) Enter your answer 28.Being able to live in a clean environment is lucky. --> It is_______________________________________________________ . (1 Point) Enter your answer 29."Would you like to have a drink with me?” --> He invited ___________________________________________________ (1 Point) Enter your answer 30.“You should give up smoking” --> The doctor advised ___________________ (1 Point) Enter your answer

vẽ đậu mầm NL : nốt câu này là hết đ r

BÀI 1: Cho P= ( 2+x/x-2 + x/ x+2 - 4/x^2-4) : (x - x^2/x+2) a/ rút gọn P b/ tìm giá trị nguyên của x để P có giá trị nguyên dương c/ tính giá trị P biết x thỏa mãn: -x^2 - x +2 d/ tìm x để P lớn hơn 0

1.Her handbag was stolen but she didn't see it happen. -> She didn't... 2. I receive double the amount I ordered. -> I received twice...

Calli chữ : Tra Nam y/c : màu " xa lánh ":> có tậm hộ nha, ko tui thẳng tay bc :> NL: ám chỉ ai đó :> @Sâu

rút gọn các bt sau: 1. √( √11+3) ² 2. √ 4-2 √3 3. √(3- √2) ² 4. √7+4 √3 5. √(5+ √7) ² - √8-2 √7

Cho a1 g Na tác dụng với bg nước được dd xút có nồng độ C%. Cho a2 g Na2O tác dụng với bg nước thu được dd xút có cùng nồng độ C% a. Xác định mối quan hệ giữa a1, a2 và b b. Cho a1 = 4,6; b = 20. Xác định a2 và nồng độ C%.

V. Read the story. Choose a word from the box. Write the correct word next to numbers 1-6. Jane loves reading. Last Tuesday, her father ...gave...her a new book to read. It was about a (1) ………who sailed round the world in a very small boat. Her name was Mary Banks and she was only 22. It was a very exciting story. Mary saw (2) ...................and sharks in the sea. She was often (3) .....................but she was never afraid. When Mary came home, lots of people wanted to read about her. Jane read a story about her on the back (4) ....................of one of her comics! Mary was often on television too. Jane loved the book. “Can we (5) ......................a boat, Dad?” she asked. “I want to sail a boat round the world too!” Jane’s father looked at her and smiled. “I think that’s a great idea, Jane. But first you must learn to (6) ..................!” }} }}