Answer:
C. 5x² - 4
General Formulas and Concepts:
Algebra I
- Composite Functions
- Combining Like Terms
Step-by-step explanation:
Step 1: Define
f(x) = 4x² + 1
g(x) = x² - 5
(f + g)(x) is f(x) + g(x)
Step 2: Find (f + g)(x)
- Substitute: (f + g)(x) = 4x² + 1 + x² - 5
- Combine like terms: (f + g)(x) = 5x² - 4
