Question

dadas as funçoes f (x) = 5x-8 e g(x)=x ao quadrado + 4x determine g(f(x))

Answer 1

Dadas as funçoes f (x) = 5x-8 g(x)=x² + 4x determine g(f(x))
f(g(x))= (5x-8)² + 4(5x-8)

f(g(x))= 25x² - 80x + 64 + 20x - 32

f(g(x))= 25x² - 60x + 32