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Phạm Văn Bắc

Toán học - Lớp 9

13/01/2025 19:40:47

Tìm giá trị lớn nhất của biểu thức sau: a) \(A = \frac{3}{{2\sqrt x + 5}}\); b) \(B = \frac{{\sqrt x + 5}}{{\sqrt x + 3}}\); c) \(D = \frac{1}\).

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Phạm Văn Bắc

Toán học - Lớp 9

13/01/2025 19:40:44

Rút gọn biểu thức \(P = \left( {1 + \frac{{\sqrt x }}} \right):\frac{{\sqrt x + 1}}{{x\sqrt x - 1}}\) (x ≥ 0, x ≠ 1).

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Phạm Văn Bắc

Toán học - Lớp 9

13/01/2025 19:40:32

Tính giá trị của biểu thức \(B = \left( {\frac{1}{{\sqrt x - 2}} + \frac{1}{{\sqrt x + 2}}} \right).\frac{{\sqrt x }}\) tại x = \(\frac{1}{4}\).

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:31

Some people believe bicycles have a lot of advantages whereas others believe bicycles have more disadvantages. Discuss both views and give your opinion.

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:27

In recent years some countries have experienced very rapid economic development. This has resulted in much higher standards of living in urban areas but not in the countryside. This situation may bring some problems for the country as a whole. What are these problems? How might they be reduced?

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:25

In most developed countries, shopping is not only about buying the goods you need; it is also perceived as entertainment. Is it a positive or negative development?

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:25

Some people believe that children's leisure activities must be educational, otherwise they are a complete waste of time. Do you agree or disagree?

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:23

In recent years, there has been growing interest in the relationship between equality and personal achievement. Some people believe that individuals can achieve more in egalitarian societies. Others believe that high levels of personal achievement are possible only if individuals are free to succeed or fail according to their individual merits. What is your view of the relationship between equality and personal success?

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:23

Some people say that violence in the media promotes violence in society. To what extent do you agree or disagree with this view?

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Phạm Văn Bắc

Tiếng Anh - Lớp 12

13/01/2025 19:40:16

When a country develops its technology, the traditional skills and ways of life die out. It is pointless to try and keep them alive. Do you agree and disagree with this statement?

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