F(x) = 2x - 1 Maka nilai x yang membuat (FoF)(x) = 9 adalah...

Kelas 10 Matematika
Bab Fungsi Komposisi

(fof) (x) = 9
f (2x - 1) = 9
2(2x - 1) - 1 = 9
4x - 2 - 1 = 9
4x = 9 + 3
x = 12/4
x = 3

F(x) = 2x - 1
9 = 2x - 1
2x = 9 + 1
x = 10÷2
= 5

Semoga Membantu.... (^_^)