jika g (x) = 3x + 7 dan (g°f) (x) =3x²-9x-8 maka f(x)=
Matematika
tina09031
Pertanyaan
jika g (x) = 3x + 7 dan (g°f) (x) =3x²-9x-8 maka f(x)=
1 Jawaban
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1. Jawaban rendy352
(g°f)(x) = g{f(x)}
3x²-9x-8= 3{f(x)}+7
3x²-9x-8-7 = 3{f(x)}
(3x²-9x-15)÷3 = f(x)
x²-3x-5 = f(x)