Answer:
The answer to your question is (f + g) (-2) = -20
Step-by-step explanation:
Data
L(x) = x² - 20
g(x) = 2x
(f+ g)(-2) = ?
Process
1.- Calculate (f + g) (x)
(f + g) (x) = x² - 20 + 2x
- Simplification
(f + g) (x) = x² + 2x - 20
2.- Evaluate (f + g)(x) in -2
(f + g)(-2) = (-2)² + 2(-2) - 20
-Simplification
(f + g)(-2) = 4 - 4 - 20
3.- Result
(f + g) (-2) = -20
