Jawaban:
(x) = 2/9x²-22/9x+ 101/9
Penjelasan dengan langkah-langkah:
Diketahui:
g(x) = -3x+4
fog (x) = 2x²+2x+5
Ditanya :
f(x)?
JAWAB:
fog (x) = 2x²+2x+5
f(-3x+4) =2x²+2x+5
misalkan t = -3x+4
f(t) = 2(-⅓(t-4))²+ 2(-⅓(t-4))+5
f(t) = 2/9(t²-8t+16) – ⅔(t-4)+5
f(t) = 2/9t²-16/9t+ 32/9- ⅔t + 8/3 +5
f(t) = 2/9t²-22/9t+ 101/9
