Algebra-1

Question Analysis
This question tests the student's ability to simplify a polynomial and then determine its degree, which is a more advanced skill in Algebra-1.

Key Concept Explanation
To find the degree of a polynomial, it must first be simplified by combining like terms. The degree is then determined by the highest degree among all individual terms.

Step-by-step Solution
1. Start with the polynomial:
2. Distribute the 5:
3. Combine like terms:

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