Respuesta :

TahsanS

Answer:

f(g(x))=9-x-[tex]x^{2}[/tex]

Step-by-step explanation:

Given ,

f(x)=9-x

g(x)=[tex]x^{2}[/tex] +x

here,.

fog

=f(g(x))

=f([tex]x^{2}[/tex] +x)

=9-([tex]x^{2}[/tex] +x)

=9-[tex]x^{2}[/tex] -x

=9-x-[tex]x^{2}[/tex]