Algebra-1

Question Analysis
This question tests the ability to subtract functions and simplify the resulting expression, focusing on the closure property.

Key Concept Explanation
The result of subtracting one function from another is always a new function, and this new function can be simplified by combining like terms.

Step-by-step Solution
1. Start with the given functions: and
2. Write the difference:
3. Distribute the negative sign:

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