Question

if f(x)=x-9, find f(x)-f(-x)

Answer 1

F(X) - F(-X).

X-9- (-X)-9

X-9 + X- 9

2X-18 = 0

2X = 18.

X = 18/2 = 9

Answer 2

Answer:

f(x) - f(-x) = (x - 9) - (-x -9)

= x + x - 9 + 9

= 2x

Step-by-step explanation: