Tolong bantu pakai cara yaa..

(f o g)(x) = 2x^2 + 8x - 3
f(g(x)) = 2x^2 + 8x - 10 + 7
f(x^2 + 4x - 5) = 2(x^2 + 4x - 5) + 7
f(x) = 2x + 7