Explanation:
The initial expression is:
[tex](6u^3+8u^2+6)+(5u^3-6u+4)[/tex]To simplify, we need to eliminate the parenthesis, so:
[tex]6u^3+8u^2+6+5u^3-6u+4[/tex]Then, we need to identify the like terms:
6u³ and 5u³ are like terms
6 and 4 are like terms
Therefore, the simplified expression is:
[tex]\begin{gathered} (6u^3+5u^3)+8u^2-6u+(6+4) \\ 11u^3+8u^2-6u+10 \end{gathered}[/tex]So, the answer is: