To find this answer, we are going to combine like terms, meaning that we are going to combine terms that have the same variables with the same exponents (for example, [tex]3x^2[/tex] and [tex]8x^2[/tex] equals [tex]11x^2[/tex]).
[tex]f(x) + g(x)[/tex]
[tex](3x^3 - 4x^2 + 5) + (x^2 + 2x - 6)[/tex]
[tex]\boxed{f(x) + g(x) = 3x^3 - 3x^2 + 2x - 1}[/tex]
