No, you can't use previous posted works, even if they are your own. It will be flagged as duplicate material. HubPages is very strict about using original work on their site.
What you can do is to have the same theme, but you have to rewrite in different words.
I know this from personal experience. When I first started I used something from my personal website and it was marked duplicate. However, HubPages gave me the opportunity to change it and republish it.