Question

f(x)=x+2 , g(x)=2x+1 find fog and gof​

Answer 1

Answer:

f o g = 2x+3

g o f = 2x+5

Step-by-step explanation:

Given

f(x) = x+2 & g(x) = 2x+1

then

(1) f o g

    = f(g(x))

    = f(g(x))

    = f(2x+1)

    = (2x+1)+2

    =  2x+3

2) g o f

    = g(f(x))

    = g(x+2)

    = 2(x+2)+1

    = 2x+4+1

    = 2x+5