The expression \( 28 - 7x^2 \) is a quadratic expression where:

- The first term is a constant: \( 28 \).
- The second term involves a negative quadratic term: \( -7x^2 \).

There is no further simplification possible unless you have a value for \( x \).

Would you like to substitute a value for \( x \), or do you need to solve or analyze this further in a specific context?

### Related Questions:
1. What happens to the expression when \( x = 2 \)?
2. Can this expression be factored?
3. How does this expression behave graphically?
4. What is the vertex of the quadratic part of the expression?
5. What are the solutions when setting the expression equal to zero?

**Tip:** When graphing a quadratic equation, always note whether the parabola opens upwards or downwards. The sign of the coefficient of \( x^2 \) tells you this.

Explore the quadratic expression 28 - 7x^2. Learn about its structure, how to analyze and graph it, and find out how it behaves when x takes specific values. This explanation covers key algebraic concepts such as quadratic expressions and graphing, perfect for students in Grades 8-10.

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