Answer:
4x² + 2x - 2
General Formulas and Concepts:
Algebra I
Explanation:
Step 1: Define
Identify
x² - 3x + 7 + 3x² + 5x - 9
Step 2: Simplify
- Combine like terms (x²): 4x² - 3x + 7 + 5x - 9
- Combine like terms (x): 4x² + 2x + 7 - 9
- Combine like terms: 4x² + 2x - 2