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anonymous

  • 5 years ago

How would you factor x^4-81? I need to see the steps; I have the answer but not how you get it.

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  1. anonymous
    • 5 years ago
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    \[x^4-81=(x^2)^2-9^2=(x^2-9)(x^2+9)\] \[=(x-3)(x+3)(x^2+9)\]

  2. anonymous
    • 5 years ago
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    Thanks!

  3. anonymous
    • 5 years ago
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    That was pretty nice. I would fan you, Anwar, if not for you getting so cheeky earlier!

  4. anonymous
    • 5 years ago
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    Newton is a fan of me.. YAAY!! :)

  5. anonymous
    • 5 years ago
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    When was I cheeky? I am never cheeky, if I know what that means :P

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spraguer (Moderator)
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