user-avatar
akeocampha
1 năm trước
Cho hệ phương trình {mx+y=m^2+3 { x-y=-4 Chứng minh rằng với mọi m#-1 hpt có 1 nghiệm duy nhất (x, y). Khi đó tìm gtnn của biểu thức Q=x^2-2y+10
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

vi. Read the passage and answer the following questions: We moved into our new house on a warm September day. It was not really a new house. It was a hundred and four years old, but it was new to us. The house had running water, gas and electricity but for some reasons, there was no electricity light in the kitchen. It was some thing quite unexpected: a house with electricity but without a kitchen light. It was quite puzzling because our kitchen was a large room, perhaps the largest in the house. 1.When did they move into their new house? .......................................................................................................................... ............. 2. Was the house new or old? .......................................................................................................................... ............. 3.Was the house more than a century old? .......................................................................................................................... ............. 4.Was there no electricity in the house? .......................................................................................................................... ............. 5.Why did the writer feel puzzled? .......................................................................................................................... ............. j úp mk vs mn ơi

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team