(a) 2x2 – 8x + 12
(b) 4x2 + 4x + 15
(c) 2x2 – 8x + 15
(d) 4x2 + 4x + 27
(e) 4x2 + 4x + 3
Jawaban: E
Pembahasan: (f o g) (x) = f(g(x))
(f o g) (x) = f(2x + 3)
Maka (f o g) (x) = (2x + 3)2 – 4 (2x + 3) + 6
= 4x2 + 6x + 6x + 9 – 8x – 12 + 6
(a) 2x2 – 8x + 12
(b) 4x2 + 4x + 15
(c) 2x2 – 8x + 15
(d) 4x2 + 4x + 27
(e) 4x2 + 4x + 3
Jawaban: E
Pembahasan: (f o g) (x) = f(g(x))
(f o g) (x) = f(2x + 3)
Maka (f o g) (x) = (2x + 3)2 – 4 (2x + 3) + 6
= 4x2 + 6x + 6x + 9 – 8x – 12 + 6
Editor: Rian Ade Maulana