In the expression $$-3a^2b + 2ab - 4b^2$$ , the coefficient ...

Question Analysis
This question tests the student's ability to identify the coefficient of a specific term in a polynomial.

Key Concept Explanation
A coefficient is the numerical factor (including its sign) that multiplies the variable part in a term. If a term has no explicit numerical factor, its coefficient is 1 or -1.

Step-by-step Solution
1. Identify the term:
2. The coe...