Diketahui (gof) (x) = 4x² + 4x dan g (x) = x² - 1. Tentukanlah nilai f(x-2)!

jawab

fungsi
g(x) = x² -1
gof(x) = 4x² + 4x
g{ f(x)} = 4x² + 4x

f²(x) - 1= 4x² + 4x 
f² (x)= 4x² + 4x  + 1 
( f(x))² = (2x + 1)²
f(x)= 2x + 1

f(x -2) = 2(x -2) + 1
f(x - 2) = 4x - 4 + 1
f(x -2) =  4x - 3