Question

sejam f(x)=2x+1 e g(x)=3x+1.Entao f(g(3)) - g(f(3))​

Answer 1

f(x)=2x+1

g(x)=3x+1

f(g(x)) = 2(3x+1)+1

f(g(3)) = 2(3*3+1)+1 = 21

g(f(x)) = 3(2x+1)+1

g(f(3))​ = ​3(2*3+1)+1 = 22

Então, f(g(3)) - g(f(3))​ = 21-22 = -1