x+1=x và x^2+1=0 hai pt trên có tương đương ko

Một tổ công nhân dự định ngày làm 9 sản phẩm thì hoàn thành khối lượng công việc trong 20 ngày. Hỏi nếu hoàn thành công việc đó trong 15 ngày thì mỗi ngày đội công nhân đó phải làm bao nhiêu sản phẩm?

giúp mk vs............................................ cấm spam dưới mọi hình thức

Nêu hiểu biết của em về phong trào Đông Kinh Nghĩa Thục. So sánh phong trào với nhà trường hiện nay.

Viết đoạn văn về tình người

Viết 3 ô nhịp gồm các nốt đơn, đen, trắng thể hiện được nhịp 6/8

Past Tense Negation - Exercise 6 Put the following sentences into the negation. Fill in the negative form of the verb. Example: We had fish for dinner. We didn't have fish for dinner. 1. We saw our friends after school. We our friends after school. 2. I talked to her this morning. I to her this morning. 3. She did the washing while we were at work. She the washing while we were at work. 4. My sister was at home when Aunt Susan arrived. My sister at home when Aunt Susan arrived. 5. Barbara fed the animals in the morning. Barbara the animals in the morning. 6. The lessons were very interesting. The lessons very interesting. 7. The meeting began at eight o'clock in the morning. The meeting at eight o'clock in the morning. 8. We agreed to what she said. We to what she said. 9. She showed me her new mountain bike. She me her new mountain bike. 10. They were at home yesterday afternoon. They at home yesterday afternoon. 11. We met him at the station last Friday. We him at the station last Friday. 12. We played football at the weekend. We football at the weekend. 13. His mother went to work by car yesterday. His mother to work by car yesterday. 14. He wasn't angry with me because I told him the truth. He was angry with me because I him the truth. 15. We were happy because Ron invited us to his party. We were angry because Ron us to his party

làm hộ em câu này: 3x+5(x-2)=10

lấy Ví Dụ về mỏ ngoại sinh ( tối đa 4 Ví dụ ai nhiều hơn em vote 5 sao ạ

Tìm x E Z biết -15÷x=3 -3x+8=-7 (x-6)(7-x)=0