Can I House 2 Beardies Together(Rescue Need Help!!!)

So about a month ago i rescued a bearded dragon his name is dexter he is 7 months old and still the size of a baby he is about 4in long and was stuck in a ten gallon tank i have just gotten the new tank for him but he seems really interested in being with my other bearded dragon lucifer. when i got dexter he wasn't in the best shape he was only fed mealworms and only ate crickets once a week and only 5 at that he's still not eating most of the crickets I'm offering him, and his lighting system was so screwed up idk what the people i got him from were thinking they called dexter to much to handle i have no clue if dexter is a boy or girl he's to small to tell but lucifer my 11in bearded dragon whom I've had for 7 months is male but i wonder if it would be ok if i placed those 2 in a tank together i really wanna know because lucifer won't leave the cool side of his tank because dexters over on that side so what should i do.....

I would keep them separate. They don't usually play nicely together and can at least hog the resources (food, basking space, etc) of the other and could easily cause physical harm. I think the best thing to do would be to put the tanks in separate rooms or at least put up a solid divider so they can't see eachother. Even sensing another dragon can in some causes cause a great deal of stress.