Let f (x) = x*2-20 and g (x) = 2x find (f+g) (-2)

(f+g) (-2) =

(the x*2 means x squared)

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