19. A. caused B. increased C. practised D. promised Giải thích

Biết a,b,c là các số nguyên để đẳng thức : 8x^3.( 3ax^2 +bx -c) = 48x^5 - 80x^4 + 32x^3 đúng với mọi x Khi đó giá trị của biểu thức a^2 + b^2 - c^2 là ??? (cần gấp lắm lắm ạ)

Giúp mik vs ạ, mik đang cần gấp ad

This is part of a letter you receive from your English friend, Bob. That’s everything about my university. I really love it. What about your university? What do you like most about it? Now write a letter, answering your friend’s questions. Write your letter in about 100 words.

Ai biết mấy cái như này để làm rút gọn dễ hơn không???

$x^{2}$-2(m-1)x + 2m-5=0 tìm m để pt có 2 nghiệm cùng dấu khi đó 2 nghiệm mang dấu gì

Vẽ Gấu Trúc 🐼 Cute đi ạ ಡ ͜ ʖ ಡ.

Giúp mik với, mik cần rất gấp luôn

This is part of a letter you receive from your English friend, Marie. In your next letter, please tell me about your traditional food? What ingredients is it made of? Why do Vietnamese people make a lot of traditional food on special occasions?

1.She ________ by her beloved husband for a long time. was been cheated has been cheatedhas been cheating 2.The final decision ________ until the next summit meeting. won't be makewon't makewon't be made 3.When we got to the airport, we found that the flight ________ before then. was cancelled has been cancelled had been cancelled 4.The freelance journalist ________ twice in Syria. kidnap has been kidnapped was kidnapped