Question

Tolong dibantu ya.... makasih sebelumnya,,
Diket : g(x) = x² - 1
(g ₀ f)(x) = 4x² + 4x
Ditanya : f(x - 2)

Answer 1

(g ₀ f)(x) = 4x² + 4x
g(f(x)) = 4x² + 4x
(f(x))²-1 = 4x² + 4x
(f(x))² = 4x² + 4x+1
(f(x))² = (2x+1)²
f(x) = 2x+1
f(x-2) = 2(x-2)+1
         = 2x-4+1
       = 2x-3