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How would you factor 8x^6+64?

  1. Sep 10, 2009 #1
    How would you factor 8x^6+64? My text states that the answer is 8(x^2+2)(x^4-2x^2+4). How would you get to that?
     
  2. jcsd
  3. Sep 10, 2009 #2

    CRGreathouse

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    Re: factoring

    Factoring out the 8 is easy.

    Once you have that, it's clear that you have a sum of cubes: a^3 + b^3 = (a + b)(a^2 - ab + b^2)
     
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