Diketahui f(x) =x^2+2x g()x) =x-5 h(x) =x-4/2-x Tentukan (h0g0f) (x)

hog (x) = h(g(x))
= (x-5) – 4 / 2 – (x-5)
= x - 5 - 4 / 2 - x + 5
= x - 9 / 7 - x

hogof (x) = hog(f(x))
= (x² + 2x) - 9 / 7 - (x² + 2x)
= x² + 2x - 9 / 7 - x² - 2x