help me !!https://img.hoidap247.com/picture/question/20210619/tini_1624070658760.jpg

Tìm giá trị lớn nhất: a) A = 6x - x ² - 5 b) B = 4x - x ² + 3 c) C = x - x ² d) D = 2x - 2x ² - 5

Nhanh giúp vs trả lời đúng nhất đc 5s

Hỏi dễ thui ^^ Hình trên có bao nhiêu góc, bao nhiêu đt Tính tổng số đo các góc ? (Bài vẽ lung tung nhưng mẹo cả đó)

Đa thức f(x)=(x−1)(x+2)−(x−3) vô nghiệm. Đúng hay sai?

mn help mik cau nay nha mik can gap lam do ai lam dc mik cho ctlhn va 5* :{

I. Viết lại câu sao cho nghĩa không thay đổi 1"I will have an English test tomorrow" -->He said that 2. I don't have enough money, so I can't buy this bike --> If 3. Volunteers helped the flood victims so rebuid their houses --> The flood victims 4." Why are you late for school today?" --> The teacher asked him 5. Although they were tired, they tried to finish their project on time --> Despite II. Dùng từ gợi ý viết thành câu hoàn chỉnh 1. Last month,/when/ the typhoon/ happen,/everybody/move/the safe areas/./ 2. The teacher/ask/us/try/harder/the next exam/./ 3. A/lot/trees/can/save/recycling used paper/./ 4. What/you/do/when/I/call/you/last night/?/ 5. Some English speaking countries,/turkey/pudding/be/traditional food/ Christmas/./

. Read this speech. Then answer. True or False? Check (√) in the boxes. Good evening, everybody. My name is Professor Roberts and tonight I’m going to tell you how to study English well. Most of you don’t have a good method of learning English. You can learn English well by: - Listening to the lecture carefully. - Practice speaking – listening – reading – writing English regularly. - Using a good dictionary. - Working harder on the pronunciation. - Corresponding to the facts. If you follow these simple rules, you will improve your English quickly. No Content True False 19. The meeting happens in the afternoon. 20. There are many people in the room. 21. The speaker gives two simple rules. 22. According to speaker, English will be better.

Làm thế nào để lấy ra 1 lít nước khi trong tay có 1 can 3 lít và 1 can 5 lít ko có vạch chia độ 2 phút bắt đầu

Tìm x biết: 4(x+2)−7(2x−1)+9(3x−4)=30 giúp mik với