Question

if f(x)=2x^2+4 and g(x)=-x^3 then what is (f+g)(3)
help

Answer 1

\[f(x) = 2x^2 + 4 , g(x) = -x^3\]\[(f+g) = -x^3 + 2x^2 +4\]\[(f+g)(3) = -( 3)^3 +2(3)^2 + 4\]

Answer 2

so it would be 24 ?

Answer 3

how did you obtain 24 ?

Answer 4

its : -27 + 18 + 4..
so -27 + 22 = -5
Ans: -5