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Math Help - Factored Form

  1. #1
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    Factored Form

    Hey guys,

    I'm having trouble factorising this following:

    8x^6 + 64

    I've done the following:

    8(x^6 + 8)

    I'm not sure how to factorise this further. Please provide detailed steps so I can understand. Thank you.
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  2. #2
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    Use the sum of two cubes rule

    a^3 + b^3 = (a + b)(a^2 - ab + b^2).


    In your case, 8(x^6 + 8) = 8[(x^2)^3 + 3^3].
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  3. #3
    Senior Member
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    Thank you so much! I've been struggling with math, and any help is greatly appreciated!
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