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05 Oct 2018, 10:41
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In the expansion of (x - √x - 7)^7, what is the coefficient of x^(5/2)?
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07 Oct 2018, 12:41
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sleepingbeauty
Did you get this from an actual GMAT problem? You may want to find that problem in the Problem Solving forum, if it's there already, or start a thread for it there if there isn't one.
The reason I ask, is that I haven't seen too many problems along these lines on the GMAT. This could be a really challenging GMAT problem - it doesn't use any terminology that's totally foreign to the GMAT - but it almost looks more like an algebra homework problem to me. :-D
You want to avoid practicing GMAT problems without answer choices in most situations, because the answer choices very often give you clues to the right answer - particularly on problems that look like they should have a lot of calculation.
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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