The image is a poster with a white background and a blue border. The text on the poster is in Vietnamese and appears to be educational content related to mathematics. Here is a detailed description of the content:

1. **First Section**: The first section contains a mathematical formula or equation, which is not fully visible in the image.
2. **Second Section**: This section features a mathematical problem or question. It includes a question mark and a mathematical symbol, indicating that it is a math problem.
3. **Third Section**: This section contains another mathematical problem or question. It also includes a question mark and a mathematical symbol, indicating that it is another math problem.
4. **Fourth Section**: This section contains a mathematical problem or question. It includes a question mark and a mathematical symbol, indicating that it is another math problem.

The text is written in a clear, legible font, and the mathematical symbols used are standard for mathematical problems. The overall theme of the poster seems to be educational,