Question

sendo f(x)=5x+2 e g(x)=2-3.calcule f(g(x)) e g(f(x))

Answer 1

f(x) = 5x + 2
g(x) = 2 - 3x

f(g(x)) = f(2-3x)
f(2-3x) = 5(2-3x) + 2
f(g(x)) = 10 - 15x + 2
f(g(x)) = 12 - 15x

g(f(x)) = g(5x+2)
g(5x-2) = 2 - 3(5x+2)
g(f(x) )= 2 - 15x - 6
g(f(x)) = -4 -15x