Diketahui (gof)(x) = 4x²+4x dan g(x) = x²- 1 . Tentukanlah nilai f(x-2) Tolong bantu yah kkak...

jawab

gof(x) = 4x² + 4x
g { f(x)} = 4x² + 4x
f² (x)  - 1 = 4x² + 4x
f² (x) = 4x²+ 4x + 1 = (2x +1)²
f(x)= 2x + 1
f(x -2) = 2(x-2) + 1
f(x -2) = 2x - 4 + 1 
f(x- 2) = 2x - 3