Question

Diketahui g(x) = 2x + 3 dan f(x) = x2 - 4x + 6, maka
(fog)(x) = ....
A 2x2 -8x + 12
B. 2x2 - 8x + 15
C. 4x2 + 4x + 3
D. 4x2 + 4x + 15
E. 4x2 + 4x + 27​

Answer 1

Jawab:

C

Penjelasan dengan langkah-langkah:

(2x+3)^2-4(2x+3)+6

4x^2+12x+9-8x-12+6

4x^2+4x+3

Answer 2

Dik g (x) = 2x +3

f (x) = x² -4x +6

Dit = (fog) (x)

Dij :

(fog) (x) = f (g(x))

= f (2x +3)

= (2x+3)² -4(2x +3) +6

= 4x² +6x +9 -8x -12 +6

= 4x² -2x +3

semoga membantu :)