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Posted by on Friday, September 13, 2013 at 11:29pm.

Factoring Polynomials
(please show step by step)

-8z^3 + 512w^3

  • Math - , Saturday, September 14, 2013 at 12:06am

    I see cubes all over the place, you should be familiar with the factors of A^3 + Bb^3 = (A+B)(A^2 - AB + B^2) and its equivalent of A^3 - B^3

    -8z^3 + 512w^3
    = -(8z^3 - 512w^3)
    = - (5z - 8w)(25z^2 + 40wz + 64w^2)

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