A. y=0. B. x + 1/x = 0. Cái nào làm PT bật nhất một ẩn v ạ (kèm chứng minh)

y=0 có phải là PT bật nhất một ẩn k ạ

Phương trình nào sau đây là PT bậc nhất tại trắc nghiệm) A. x + x ^ 2 = 0 B. 0x - 1 = 0 c. y=0 D. x + 1/x = 0

4x+8/x^3+8 rút gọn

x^2-4/x+2

Nguyên tử A có số p là 25 và tổng số hạt của nguyên tử A là 80. Vậy số nơtron của nguyên tử A là A. 26. B. 29. C. 28. D. 30.

Choose the words or phrases that are not correct in Standard English. 1. He always eats eggs for breakfast and drink some milk. A B C D 2. When he is four, Michael came to London with his parents. A B C D 3. Last year, Tim comes to the school for the first time. A B C D 4. Vietnam is an multicultural country with 54 ethnic groups. A B C D 5. We speak English fluent now than last year. A B C D 6. You has to take off your hats when you go to the pagoda. A B C D 7. I don't like this performance although it's too boring A B C D 8. I was play football when she called me. A B C D 9. Was you study Maths at 5 pm yesterday ? A B C D 10. In Australia, you mustn’t to comment on a person’s accent. A B C D 11. In my family, children has to get permission before leaving the dining table. A B C D 12. When I come, the whole family was having dinner around a big dining table. A B C D 13. Lang Lieu couldn’t bought any special food because he was very poor. A B C D 14. John used to going to school by bus, but now he goes by bike. A B C D 15. It has been a long time since I have visited New York. A B C D