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posted by Chely Thursday, March 14, 2013 at 11:51pm.

27a4b7 (A-1)3 ----------- • ------------ = ? 3a2-6a-3 9ab

3a^2-6a-3 = 3(a-1)^2, so we end up with 27a^4b^7(a-1) / 27ab = a^3b^6/(a-1)

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