Question

(
If f(x) = 2x +h then find f(x+h) -2f(x)
(a) h - 2x
(b) 2x - h
(c) 2x+h
plzzz help me

Answer 1

Answer:

f(x+h) - 2 f(x)

= 2(x+h) +h -2 (2x+h)

= 2x+2h+h-4x-2h

= -2x+h