Chủ đề:
Ôn tập phương trình bậc hai một ẩnCâu hỏi:
Cho phương trình
x²-(2m+1)x+m(m-1)=0
Tìm các giá trị của m để phương trình không có hai nghiệm phân biệt cùng dương
Mọi người giúp mình ạ!!!
Write the correct for orange tense of the verbs in the brackets:
1. My father prefers... (work) as a farmer rather than a blue-collar worker.
2. I can't help...( worry) about her traveling abroad on her own.
3. Rubber sandals...( wear) by Vietnamese soldiers during the war against the French and the Americans
4.She(not think) of writing about educational reformation until I mentioned it.
5. In 1995, I...(go) back to Vietnam after 30 years.
6. In recent years, Vietnam...(experience) many changes under the influence of economic reform and globalization.
7. It's kind of you...(report) to her what happened to her son last night.
8. The number of vehicles in Vietnam...(increase) by 10 percent every year.
9. If you...(come) back to the ancient world, where would you visit?
10. During our conversation, I realised that we...(meet) before.