neariahmesidor274 neariahmesidor274 11-04-2024 Mathematics contestada Given the expression: 9x2 − 15x − 6 Part A: What is the greatest common factor? Explain how to find it. (3 points) Part B: Factor the expression completely. Show all necessary steps. (5 points) Part C: Check your factoring from Part B by multiplying. Show all necessary steps. (2 points)