Algebra-1

Question Analysis
This question tests the ability to add polynomials with multiple terms and different degrees. It requires students to combine like terms carefully.

Key Concept Explanation
Adding polynomials involves combining like terms, which are terms with the same variables and exponents. The coefficients of these terms are added together.

Step-by-step Solution
1. Identify like terms: and , and , and , and .
2. Combine the coefficients of the like terms:
For terms:

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