diketahui f(x)=2x + 3,g(x) =x² + 4x +1, dan h(x)= x- 5,maka (f•g•h)(x)=…

=f(g(h(x))
=f(g(x-5)
=f((x-5)^2 +4(x-5) +1)
=f(x^2 -10x + 25 +4x -20 +1)
=f(x^2-6x+6)
=2(x^2-6x+6) + 3
= 2x^2 -12 x +12 +3
= 2x^2 -12 x + 15