How old re they? Are they both female? If it is two young females they may be able to live together. You would have a good sized cage and watch them closely for signs of stress. Other wise no. Male/ female - no, two males - no.
I have two jacksons living together, their about 4-5 months old and seem to be doing well.. Once and a while the female will show slight stress colors but its rare when that happends.. Got the xl reptibreeze enclosure with tons of plants..
SipeCsus, I would separate them. Male/female may look ok but there can be a lot of unseen stress. I know from personal experience. Time for a second cage