Jika fungsi f (x) = ax + b + 2 dan g (x) = ax - 4 memenuhi f (f (x)) = g (g (x)), maka ab + 6a + b = ....
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Pertanyaan
Jika fungsi f (x) = ax + b + 2 dan g (x) = ax - 4 memenuhi f (f (x)) = g (g (x)), maka ab + 6a + b = ....
2 Jawaban
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1. Jawaban yolandakusuma
f (f (x)) = g (g (x))
a(ax+b+2)+b+2 = a(ax-4)-4
a2x + ab + 2a + b + 2 = a2x - 4a - 4
ab + 6b + b = -6 -
2. Jawaban MutirGW
Kalo salah maaf
F(x) = ax + b + 2
G(x) = ax - 4
F(x) = g(x)
F(1) = g(1)
a + b + 2 = a - 4
b = -6
a + (-6) + 2 = a - 4
a - 4 = a - 4
a = -8
Tinggal dimasukan