Question

se f(x)=x=2 e g(x)=2 - 4x calcule os numeros reais de:f(2)-g(2)

Answer 1

f(x) = x + 2

f(2) = 2 + 2 
f(2) = 4

g(x) = 2 - 4x
g(2) = 2 - 4.2
g(2) = 2 - 8
g(2) = - 6

f(2) - g(2) = 4 - ( - 6) = 4 + 6 = 10

Resp.: f(2) - g(2) = 10