F(×)=X2+4×+5= G(×)=×-5= fog(×)= F(×)= G(×)= Gof(3)= Tolong jawab dengan cepat yahh!!

f(x) = x^2 + 4 + 5
g(x) = x - 5
Fog = F (g (x) )
Fog = (x-5)^2 + 4(x- 5 ) + 5
Fog = x^2 - 10x + 25 + 4x - 20 + 5
Fog = x^2 - 6x - 10

g o f (x)= g (f(x))
g o f (x)=(x^2 + 4x + 5 ) - 5
g o f (x)=x^2 + 4x

g o f (3) = 3^2 + 4(3)
g o f (3) = 9 + 12
g o f (3) = 21

SEMOGA MEMBANTU MAKASIH

Materi : Fungsi Komposisi
Kelas : X & XI SMA

f(x) = x^2 + 4x + 5
g(x) = x - 5

f o g (x) = f(g(x))
f o g (x) = (x - 5)^2 + 4(x - 5) + 5
f o g (x) = x^2 - 10x + 25 + 4x - 20 + 5
f o g (x) = x^2 - 6x - 10

g o f (x) = g(f(x))
g o f (x) = (x^2 + 4x + 5) - 5
g o f (x) = x^2 + 4x

jadi :
》g o f (3) = x^2 + 4x
》g o f (3) = (3)^2 + 4(3)
》g o f (3) = 9 + 12
》g o f (3) = 21

Semangat ^_^