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lokiando

  • one year ago

Easy question! Which is a sum of cubes? a) a^3 + 18 b) a^6 + 9 c) a^9 + 16 d) a^12 + 8

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  1. anonymous
    • one year ago
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    do you know what a sum of cubes is?

  2. lokiando
    • one year ago
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    no

  3. anonymous
    • one year ago
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    -_- okay so google sum of cubes and find out

  4. lokiando
    • one year ago
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  5. anonymous
    • one year ago
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    well done so basically apply that rule to all the answer choices and it should only work with one of them

  6. lokiando
    • one year ago
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    i will try

  7. lokiando
    • one year ago
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    d) a^12+8

  8. anonymous
    • one year ago
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    that's what i was thinking ;)

  9. anonymous
    • one year ago
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    not 100% sure though

  10. lokiando
    • one year ago
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    look http://www.wolframalpha.com/input/?i=x%5E5-125

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