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It seems you uploaded a math test document for 8th grade, titled "ĐỀ KIỂM TRA 15 PHÚT MÔN TOÁN LỚP 8 ĐỀ 1." The document contains three questions in Vietnamese:

**ĐỀ 1:**
1. **(2 points)**: Calculate the value of a polynomial when \( x = -3 \) and \( y \) (value is missing).
2. **(4 points)**: Two polynomials are given.  
   a) Calculate \( A + B \).  
   b) Calculate \( A - B \).
3. **(4 points)**: Perform calculations for two expressions (details unclear from the file).

Would you like to clarify or provide further information, particularly regarding the missing parts, such as the exact polynomials or expressions?

Here are five questions based on this context:
1. What are the two polynomials mentioned in question 2?
2. What is the full expression of the polynomial for question 1?
3. What is the specific operation required in question 3?
4. Should I explain the step-by-step solution process for each question?
5. Is there another set of test problems you'd like to solve?

**Tip:** When calculating the value of polynomials, always substitute the given values into the equation before simplifying!

It seems you uploaded a math test document for 8th grade, titled "ĐỀ KIỂM TRA 15 PHÚT MÔN TOÁN LỚP 8 ĐỀ 1." The document contains three questions in Vietnamese:

**ĐỀ 1:**
1. **(2 points)**: Calculate the value of a polynomial when x = -3 and y (value is missing).
2. **(4 points)**: Two polynomials are given.
   a) Calculate A + B.
   b) Calculate A - B.
3. **(4 points)**: Perform calculations for two expressions (details unclear from the file).

This test involves calculating the value of polynomials by substituting variables and performing addition and subtraction. It is designed for 8th grade students and covers essential algebraic concepts such as polynomial evaluation and operations.

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