f(x)=2x-10 g(x)=10-4x Tentukan (fog)(x) (fog)-¹(x) (fog)-¹(2)

(fog) (x) =(f(g(x))
=f(10-4x)
=2(10-4x)-10
=20-8x-10
=-8x+10
=10-8x
(fog)-¹(x)
(fog) (x)=10-8x
y=10-8x
8x=10-y
x=10-y:8
(fog) -¹(2)
(fog) (2)=-6
y=-6