Algebra-1

Question Analysis
This question tests the ability to multiply a binomial by a trinomial and to combine like terms. It requires understanding of the distributive property and sign rules.

Key Concept Explanation
To multiply polynomials, each term in the first polynomial must be multiplied by each term in the second polynomial. After multiplying, combine like terms to simplify the expression.

Step-by-step Solution
1. Distribute each term in the first polynomial to each term in the second polynomial:

2. Perform the multiplications:
3. Combine like terms:

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