The interval \([-5, 5]\) refers to the set of all real numbers between -5 and 5, inclusive of both endpoints. In interval notation, square brackets \([ ]\) mean that the endpoints are included.

### Key features of the interval \([-5, 5]\):
- It includes both -5 and 5 (because of the square brackets).
- Any real number \(x\) within this range satisfies \(-5 \leq x \leq 5\).
- This interval contains all real numbers between -5 and 5, such as \(-4, -2, 0, 3.5\), etc.

Would you like a deeper explanation of intervals or how they're used?

Here are five related questions to expand on this concept:
1. How would the interval look if it only included numbers between -5 and 5 but excluded the endpoints?
2. What is the difference between open and closed intervals?
3. How would you represent a half-open interval from -5 to 5?
4. Can you define the interval using set-builder notation?
5. What is the length of the interval \([-5, 5]\)?

**Tip:** In interval notation, round brackets \(( )\) are used to exclude endpoints, while square brackets \([ ]\) are used to include them.

Explore the interval [-5, 5], which includes all real numbers between -5 and 5, inclusive. Learn about interval notation, inequalities, and how they are applied to real numbers. Suitable for students in Grades 6-8.

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