Answer:
[tex](f+g)(x)=6x^2+13x+14[/tex]
Step-by-step explanation:
(f+g)(x) simply means that you are adding f(x) to g(x) to get a new equation that is the sum of them.
[tex]6x^2+9x+8+4x+6[/tex]
simplifies down to, by combining like terms,
[tex]6x^2+13x+14[/tex]
