Question

Jika f(x) = 3x²
Tentukan nilai f(x+2)

Answer 1

F(x+2) misalkan
(X+2) = A
F(A) = 3x2
F(A) = 3(x+2)2
(x+2)2 hasilnya nanti dikali 3

Answer 2

F(x) = 3x²
f(x+2) = 3(x+2)² = 3(x²+4x+4) = 3x²+12x+12