mn ơi giúp mình bài 1.Chứng minh rằng các biểu thức sau có giá trị âm với của x A=-x^2-2x-2 B=-x^2-4x-7 C=-x^2-6x-11 D=-x^2-x-1 E=-x^2-3x-5 F=-3x^2-6x-4 G=-5x^2+7x-3 H=-4x^2-6x-4 K=-1/2x^2-x-1

Giúp mình giải bài này với .Mình cần gấp lắm

Gợi ý cho mik làm câu 3 này vs ko dc giải nha

Bạn nào giải giúp mình với ạ I. combine the ideas, using a clause of purpose. 1. Rachel wanted to watch the news.She turned on the TV. 2. 111post the card today. I want it to get there on Daniel's birthday. 3. Please turn down the radio. I want to be able to get to sleep. 4. She locked the door. She didn't want to be disturbed. 5. I gave her my address. I wanted her to contact me. 6. I'm going to cash a check. I want to make sure that I have enough money to go shopping. 7. Please arrive early.We want to be able to start the meeting on time. 8. I slowed down. I wanted the car behind to be able to overtake. 9. Jackson is plann ing to take a semester off. He wants to travel in Europe. 10. The man spoke very slowly. He wanted me to understand what he said. 11. I whispered. I didn't want anybody else to hear our conversation. 12. I'll give you a map. I want you to find the way all right. 13. Please be quiet. I want to be able to hear what Sharon is saying. 14. The little boy pretended to be sick. He wanted to stay home from school. 15. I turned off the TV.I wanted my roommate to study in peace and quiet.

1.If it tomorrow, we may postpone going on a picnic. A. rains B. will rain C. shall rain D. raining 2.We’re going to be late if right now. A. we not leave B. we didn’t leave C. we won’t leave D. we don’t leave 3.If you help me with this exercise, I do the same for you one day. A. will B. would C. was D. am 4.According to the timetable,=lịch trình nên có thểm xảy ra if the train on time, we arrive at 5.30. A. leaves/ would B. left/ would C. leaves/ will D. was leaving/ would 5.If you any money, I’d give you some. A.hadn’t had B. haven’t had C. don’t have D. didn’t have 6.I wouldn’t go there at night if I you. A.am B. was C. were D. had been

giải hộ em với ạ em cảm ơn nhieueuuuuuuuu ạ

50-x+40=30 12-34+x=56 các bạn có cách nào gải chi tiết từng bước mình giảng cho em mình mãi nó không hiểu ,các bạn có cách nào chi tiết dễ hiểu không

các bạn giúp mình giải bài này nha cảm ơn 😘 tìm bcnn của a, 60 và 280 b, 84 và 108 c, 13 và 15 d, 10,12,15 e, 8,9,11 f, 24,40,168

làm giúp mik nốt bài này nha

Giải câu 2b với ạ ( Chưa quen cũng ngựa ......... ,ở trong làng bộ) (Việc cuốc ,việc cày........,tập cờ ,mắt chưa từng có)