Algebra-1

Question Analysis
This question tests the student's ability to factor a quadratic trinomial where the leading coefficient is 1 and the linear term has a negative coefficient.

Key Concept Explanation
Factoring a quadratic trinomial involves finding two numbers that multiply to the constant term (c) and add to the coefficient of the linear term (b).

Step-by-step Solution
1. Identify the coefficients:
2. Find two numbers that multiply to 36 and add to -15. These numbers are -3 and -12.
3. Write the factors:

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