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Posted by on Sunday, December 5, 2010 at 6:18pm.


  • algebra - , Sunday, December 5, 2010 at 6:47pm

    you should recognize the formula for the difference of cubes
    so (a-b)(a^2+ab+b^2) = a^3 - b^3

    of course you can always expand the given expression to get the same result.

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