Ok, so:
We're going to add these polynomials:
[tex]\begin{gathered} (6s^3+9s+10)+(3s^3+4s-10) \\ 6s^3+3s^3+9s+4s+10-10 \\ 9s^3+13s \end{gathered}[/tex]So finally, if we simplify as much as possible, we would get:
[tex]\begin{gathered} 9s^3+13s \\ s(9s^2+13) \end{gathered}[/tex]So that would be the final answer.
