F(x)=2x+3,g(x)=3x-1, niai x yang memenuhi (fog)(x-4)=f(x)+2g(x) =
Jawaban Terkonfirmasi
F(x) = 2x + 3
G(x) = 3x – 1
(fog)(x) = f(g(x))
(fog)(x) = 2g(x) + 3
(fog)(x) = 2(3x-1)+3 = 6x-2+3 = 6x+1
(fog) (x-4) = 6(x-4)+1 = 6x-24+1 = 6x-23
(fog)(x-4) = f(x) + 2g(x)
6x-23 = 2x+3 + 2(3x-1)
6x-23 = 2x+3+6x-2
6x-23 = 8x+1
-24 = 2x
x = – 12