Tolong di jawab yang benar.

6. f(x)=5x-3
g(x)=2x+4
(f-g)(x)
=>5x-3-2x+4
=>3x+1=0
=>3x=-1
=>x=-1/3

7.f(x)=4x-1
g(x)=x^2+2
(gof)(x)=g(f(x))
=(4x-1)^2+2
=(4x-1)(4x+1)+2
=8x^2+4x-4x-1+2
=8x^2+1

8.f(x)=3√x
g(x)=x^2-2x
(gof)(4)
(gof)(x)=g(f(x))
=(3√x)^2-2(3√x)
=9x-6√x
(gof)(4)=9x-6√x
=9.4-6√4
=36-6.2=36-12=24

bisax cuma itu maaf