Answer :

[tex]x^2-36x=0\\ x(x-36)=0\\ x=0 \vee x=36[/tex]
naǫ
[tex]x^2-36x=0 \\ x(x-36)=0 \\ x=0 \ \lor \ x-36=0 \\ x=0 \ \lor \ x=36 \\ \boxed{x=0 \hbox{ or } x=36}[/tex]