Algebra-2

Question Analysis
This question tests the student's understanding of the degree preservation property when combining like terms in a polynomial.

Key Concept Explanation
The key concept here is the degree preservation property. When combining like terms in a polynomial, the highest degree of the resulting polynomial remains the same as the highest degree of the original polynomial.

Step-by-step Solution
1. Identify the like terms in the polynomial: and , and .
2. Combine the like terms:

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