GMAT Math help

[stinkypete]

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I took it and did well (not trying to brag, I do have a mind built for math), but I looked at my brother's study book after I'd taken it and I couldn't believe all the different stuff they tried to get you to remember.

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at some point in time i thought i was going to take the GMAT, so i picked up a princeton review GMAT book. i found a serious fundamental error in there, that was clearly a result of the stupid book writers trying to use formulas that did not apply because they did not understand them. i found it pretty funny. then i threw the book in the garbage.