Dik:f(x)=x²+2+1

Penjelasan dengan langkah-langkah:

f(x) = x² + 2x + 1

h(x) = x + 1

a] (h o f)(x)

= h(f(x))

= h(x² + 2x + 1)

= x² + 2x + 1 + 1

= x² + 2x + 2

b] (f o h)(x)

= f(h(x))

= f(x + 1)

= (x + 1)² + 2(x + 1) + 1

= x² + 2x + 1 + 2x + 2 + 1

= x² + 4x + 4