Algebra-1

Question Analysis
This question tests the student's ability to identify the coefficient of the linear term in the expansion of a binomial squared (addition).

Key Concept Explanation
The expansion of results in a quadratic expression with three terms: the square of the first term, twice the product of the two terms, and the square of the second term. The linear term is the middle term, which is .

Step-by-step Solution
1. Identify the values of and : and

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