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Math Help - Help!! hard math questions

  1. #1
    ~*chibi-ichigo*~
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    Help!! hard math questions

    what's: x^4 + 64 factored
    and what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

    show work please ^^
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  2. #2
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    Quote Originally Posted by ~*chibi-ichigo*~ View Post
    what's: x^4 + 64 factored
    and what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

    show work please ^^
    x^4+64=x^4-64i^2 a difference of two squares (x^2+8i)(x^2-8i)
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  3. #3
    Flow Master
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    Quote Originally Posted by ~*chibi-ichigo*~ View Post
    [snip]
    what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

    Mr F says: Two ways to do it. Easy way - Apply the difference of two squares formula. Hard way - expand and simplify.

    show work please ^^
    ..
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