can u combine charge and blades and exploitweakness?

Yes. Charge requires a power action that allows movement followed by a close combat action as a free action. EW requires a close combat action to activate, like the one allowed by Charge as a free action. BCF activates when a character is given a close combat action (the close combat action does not need to be for BCF specifically), like the one use to activate EW.

like questions said yes and that what makes Gamora a sick figure

If only she also had flurry

Except Flurry and EW cannot be used together. (Obviously some cases will call for one and some for the other and more options is always fun.)

options is always good to have, and its real great when u got bcf/ew or flurry/bcf to choose from.