dijawab beserta cara kak poin ++

2. fog(x)=f(g(x))
=f(2x-1)
=(2x-1)²+4(2x-1)+2
=4x²-2x-2x+1+8x-4+2
=4x²-4x+8x+1-2
=4x²+4x-1

3. a) f(x)=2x+3/x-6
y=2x+3/x-6
y(x-6)=2x+3
xy-6y=2x+3
xy-2x=6y+3
x(y-2)=6y+3
x=6x+3/x-2

b). fog(x)=f(g(x))
=f(2x+5)
=2x+3/x-6
=2(2x+5)+3/2x+5-6
=4x+10+3/2x+5-6
=4x+13/2x-1
fog-¹(x)=
y=4x+13/2x-1
y(2x-1)=4x+13
2xy-y=4x+13
2xy-4x=y+13
x(2y-4)=y+13
x=x+13/2x-4

maaf cuma sedikit, semoga bisa membantu