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September 20, 2014

September 20, 2014

Posted by **ree** on Wednesday, March 10, 2010 at 12:53pm.

375x^3 - 192y^3

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**Reiny**, Wednesday, March 10, 2010 at 1:43pm375x^3 - 192y^3

= 3(125x^2 - 64y^3)

I now recognize the last factor as a difference of cubes

= 3(5x-4y)(25x^2 - 100xy + 16y^2)

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