Jika f(x)=2-x, g(x)=x²+1, dan h(x)=3x, maka (hogof)(3)=...

(hogof)(3)=3((2-x)^2+1)
= 3(x^2-4x+4+1)
=3x^2-12x+15 then replace x to 3
=3(3)^2-12(3)+15
=26-36+15
=5