Question

If f(x)=x+4 and g(x)=2x-3, find (g-f)(2)

Answer 1

f(x) = x + 4
g(x) = 2x - 3
(g - f)(2) = (2x - 3) - (x + 4)
(g - f)(2) = (2x - x) + (-3 - 4)
(g - f)(2) = x - 7

Answer 2

f(x)= x+4
g(x)= 2x-3


(g-x)(x) = [2x-3] -[x+4]
= 2x-x-3-4
= x-7



(g-x)(2)= (2)-7
= -5