Question: What is the simplified form of the expression 3x^2 - 2x + 4x^2 - 5?

Options:

1. 7x^2 - 5
2. x^2 - 5
3. x^2 + 5
4. 7x^2 + 5

Correct Answer: 7x^2 - 5

Solution:

Step 1: Combine like terms: (3x^2 + 4x^2) + (-2x) - 5 = 7x^2 - 5.