Algebra-1

Question Analysis
This question involves multiplying a binomial by a trinomial .The main focus is on applying the distributive property to expand the polynomial product and combining like terms, with emphasis on handling a multi-digit coefficient.

Key Concept Explanation
The distributive property requires every term in the first polynomial to multiply each term in the second.

Step-by-step Solution
1. Distribute 5k (from the binomial) to each term in the trinomial:

2. Distribute 2 (from the binomial) to each term in the trinomial:

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