Learn everything there is to know about Hellenistic history. Pay
particular attention to themes the professor has labeled his "own
argument." Write these things down on 3 X 5 notecards. Use different
colored pens. Do not review the notecards except to remark to yourself
that you are good at arts n' crafts.
Take exam. Employ well-honed ability to bullshit. Make mention of those things which are the professor's "own argument," (they love that shit). On essay, repeat self, uh, repeatedly. Sigh. A lot. Hand exam in and tell professor that you really, thoroughly, more than anything else you've ever paid to learn, enjoyed his class. Smile as sincerely as possible.
Forget everything there is to know about Hellenistic history...I mean, Helenwho?