cant figure this one out. just need to factor it

8r^3 - 27

ive got to

(2r)^3 - 3^3

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- Sep 22nd 2010, 05:42 PMsiberianfogfactoring basic college algebra problem
cant figure this one out. just need to factor it

8r^3 - 27

ive got to

(2r)^3 - 3^3 - Sep 22nd 2010, 06:12 PMskeeter