Algebra-1

Question Analysis
This question tests the student's ability to simplify a polynomial and then determine its degree. It requires both algebraic manipulation and understanding of polynomial degrees.

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

Step-by-step Solution
1. Simplify the polynomial :
Distribute the -4:
Combine like terms:
Rearrange terms:

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