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March 25, 2017

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Factor completely, or state that the polynomial is prime.

375x^3 - 192y^3

  • math - ,

    375x^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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