chỉ ra đk loại mấy + dịch nha làm nx

Cho hình thang ABCD , góc A = góc B = 90 ° .... Giúp mình vẽ hình vs giải câu b ,c vs ạ

Chứng minh các phân thức sau luôn có nghĩa : a) `(x-y) / (x ² y ² - 2xy + 3)`

giải đáp hộ mình với mình xin cảm ơn ạ

giúp với ạ em sẽ cho 5 sao ạ phân tích đa thức thành nhân tử

Vẽ chibi nam tradi NL:hóng các idol

Sandra finished her work then she went out with her friends. 1 điểm A. By the time Sandra finished her work, she had gone out with her friends. B. Before Sandra finished her work and then she went out with her friends C. After Sandra finished her work, she went out with her friends. D. After Sandra had finished her work, she went out with her friends. In 2004, a tsunami suddenly destroyed a part of Indonesia. 1 điểm A. A part of Indonesia was suddenly destroyed in 2004 by a tusnami. B. A part of Indonesia was suddenly destroyed by a tsunami in 2004. C. A Indonesia suddenly destroyed a tsunami in 2004 D. A part of Indonesia is suddenly destroyed Indonesia in 2004. We had to move the furniture to higher places because of the flooded houses. (SINCE) 1 điểm A. Since the houses were flooded, we had to move the furniture to higher places. B. Since we had to move the furniture to higher place, the houses were flooded. C. Since the flooded houses, we had to move the furniture to higher places. D. Since the houses are flooded, we had to move the furniture to higher places. I don’t speak English well, but I can communicate with foreigners. * 1 điểm A. Despite not speaking English well, I can communicate with foreigners. B. In spite not speaking English well, I can communicate with foreigners. C. Although I don’t speak English well, but I can communicate with foreigners. D. Despite I don’t speaking English well, I can communicate with foreigners. Using dynamite for fishing will result in water pollution. 1 điểm A. Using dynamite for fishing causes water pollution. B. Using dynamite for fishing will lead to water pollution. C. Using dynamite for fishing will make water polution. D. Using dynamite for fishing will lead in water pollution. “My daughter is taking an exam tomorrow.” said the woman. 1 điểm A. The woman said that her daughter was taking an exam the next day. B. The woman said that her daughter was taking an exam tomorrow. C. The woman said that her daughter was taking an exam next day. D. The woman said my daughter was taking an exam the following day. I don’t eat anything because I am not hungry. 1 điểm A. If I was hungry, I would eat something. B. If I am hungry, I will eat something. C. If I wasn’t hungry, I would eat something. D. If I was hungry, I wouldn’t eat something. Unless you go to Hue festival, you won’t know why we like the oriental night show. 1 điểm A. If you know why we like the oriental night show, you don’t go to Hue festival. B. If you go to Hue festival, you will know why we like the oriental night show. C. If you go to Hue festival, you won’t know why we like the oriental night show. D. If you don’t to Hue festival, you will know why we like the oriental night show.

Một cửa hàng bán quấn áo khi giảm giá 41% thì số tiền của quần áo đó là 450.000. Tìm số tiền ban đầu khi chưa giảm giá

Chứng minh `(a^2+3)/sqrt(a^2+2)>2` với mọi giá trị của `a`.

Tính giá trị của biểu thức a) A=b³+c³+ab²+ac²-abc biết a+b+c=0 b) B=x⁵-5x⁴+5x³-5x²+5x-1 với x=4 c) C=x⁷-80x⁶+80x⁵-80x⁴+...+80x+15 với x=79 Giúp tui nhanh nhanh với :(((