12. diketahui (x)= x+4/x-6,x≠6 dan g(x)=2x-1 maka (fog)-¹(x)=...

(fog) = 2x-1+4/ 2x-1-6
= 2x+3/ 2x-7
(fog) invers =
y= 2x+3/2x-7
y(2x-7) = 2x+3
2xy-7y = 2x+3
2xy-2x = 7y+3
x(2y-2) = 7y+3
x = 7y+3/ 2y-2
y = 7x+3/2x-2

SEMOGA MEMBANTU :)

jawaban ada di lampiran ya :)