phan tich da thuc thanh nhan tu (4x^2 - 4x +1) - (x+1)^2

Làm + giải thích giúp mk vs mk cần gấp ạ cảm ơn

Vẽ đậu mầm tức giận Kể tên 3 ca sĩ hot nhất

Trong các dãy số dưới đây, Số nào không thuộc dãy số :1,4,7,10,13... a.1000b.1234c.2007d.100 Giúp ạ

làm giùm,bài:ÔN TẬP TÌM NGHIỆM CỦA ĐA THỨC 1 BIẾN

a 7X-5=16 b 156-2X=82 c 10X+65=125 d 8X+2X=25.2^2

1. I had (1)________ very bad experience (2)___________ last Sunday. I bought (3)____________ flash drive from (4)______________ computer store in (5)__________ local shopping centre. When I went back (6)____________ home, I inserted it into my computer, but it was not recognized. I took it back to (7)__________ store, but (8)______________ store manager got very angry. He pointed at (9)_________ crack on (10)_________ flash drive, and said his store was not responsible for such (11)___________ defect by my carelessness. I couldn’t say (12)____________ word, and had to buy another flash drive.

cho -1 < x < 1 tìm giá trị nhỏ nhất của biểu thức A=(3x-5)² phần 1-x²

Combine the sentences below, using the words in brackets. ( Nối câu sử dụng từ nối trong ngoặc) 1. I was standing right next to her. She didn’t recognize me. (but) …………………………………………………………………………………. 2. They couldn’t drive fast. The road was slippery. (so) …………………………………………………………………………………. 3. You work too fast. Perhaps that’s why you make so many mistakes.(if) …………………………………………………………………………………. 4. People admire him. He has talent. (because) ...................................................................…………………………………………. 5. I agreed. Kien asked me to join his volunteer project. (and) …………………………………………………………………………………. 6.Ba often gets good grades. He always studies hard. ( Because ) ……………………………………………………………………………………………….. 7. You should be careful with the food you eat. You will have an allery. (Or ) ……………………………………………………………………………………………….. 8.She had to cook dinner herself. Lan’s mother was home late yesterday. (So) ………………………………………………………………………………………………... 9.To stay healthy, we should eat more vegetables. We shouldreduce high-fat food. ( And ) ……………………………………………………………………………………………... 1o. We talk and sing for the elderly people. It makes them happy (because) ………………………………………………………………………………….……………

Hoà tan 31,2 gam hỗn hợp Fe2O3 và Fe3O4 vào 200 gam dd HCl C% ( axit lấy dư 25% so với lượng phản ứng ) thì thu được dd M . Cô cạn dd M thu được 61,45 gam muối. a. Viết các phương trình phản ứng. b. Tính khối lượng mỗi oxit trong hỗn hợp ban đầu c. Tính C% của dd HCl đã dùng.