Respuesta :

We have the following:

[tex]\begin{gathered} A=\left\{ 1,5,6,9\right\} \\ B=\left\{ 2,5,8\right\} \end{gathered}[/tex]

Therefore.

[tex]\text{AUB}=\left\{ 1,2,5,6,8,9\right\} [/tex]