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The image you've uploaded contains two sets of exercises in French, one on expanding and reducing expressions and another on factoring.

### Exercice 4: Développer et réduire les expressions suivantes:
1. \((x - 1)^2\)
2. \((3x + 1)^2\)
3. \((b + 6)^2\)
4. \((x + 2)^2\)

In this exercise, you're required to expand and simplify these expressions. These are all binomials, and you can use the identity for expanding squares of binomials:  
\((a + b)^2 = a^2 + 2ab + b^2\).

### Exercice 5: Factoriser les expressions suivantes:
1. \(A = ac - 2a\)
2. \(B = 12x + 8\)
3. \(C = 2x + x^2\)
4. \(D = 8x - 8y\)
5. \(E = 20 - 50y\)
6. \(F = 2 - 16x\)

Here, you're required to factor the given expressions by finding the common factor in each term.

Would you like me to provide detailed solutions for each of these problems?

Here are 5 related questions that could help you expand your understanding:
1. How do you apply the distributive property to expand binomials?
2. What steps are involved in simplifying an expanded expression?
3. What methods are used to identify common factors when factoring an expression?
4. How do you factor quadratic expressions like \((x^2 + 2x)\)?
5. Can you apply the factoring technique to trinomials?

**Tip:** Always check if you can factor out a greatest common factor (GCF) before attempting more complex factoring methods.

The user submitted an image containing algebraic exercises focused on expanding binomials and factoring expressions.

Learn how to expand and factor algebraic expressions such as (x - 1)^2, (3x + 1)^2, and factor expressions like ac - 2a and 12x + 8. This problem covers key algebra concepts such as the distributive property, square of binomials, and factoring. Suitable for students in Grades 7-9.

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