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TBNRfrags

  • one year ago

(v-8)^2 help pl0x

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  1. anonymous
    • one year ago
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    Do you want to expand the expression?

  2. Astrophysics
    • one year ago
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    \[(v-8)^2 \implies (v-8)(v-8)\]

  3. anonymous
    • one year ago
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    Use the foil method.

  4. Owlcoffee
    • one year ago
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    I'll give you a hint: \[(a-b)^2 = a^2 -2ab +b^2 \]

  5. TBNRFrags
    • one year ago
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    http://prntscr.com/7kj71y this is the whole thing...

  6. anonymous
    • one year ago
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    Ah, its \[(3v-8)^2\]

  7. anonymous
    • one year ago
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    Just rewrite it as \[(3v-8)^2 = (3v-8)(3v-8) = \]

  8. anonymous
    • one year ago
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    Do you know how to use the foil method to expand?

  9. TBNRFrags
    • one year ago
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    No idea

  10. anonymous
    • one year ago
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    You expand each term one by one.

  11. anonymous
    • one year ago
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    \[(3v - 8)(3v - 8) = 3v*3v - 8*3v - 8*3v + 8*8\]

  12. anonymous
    • one year ago
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    To approach binomial expansion of any order, you must first understand how the foil method works.

  13. TBNRFrags
    • one year ago
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    so its B?

  14. anonymous
    • one year ago
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    But what about the v term?

  15. anonymous
    • one year ago
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    After you combine the like terms, you should get something like\[9v^2-48v+64\]

  16. anonymous
    • one year ago
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    The only time when the middle term cancels out is when the signs are opposite. Check out conjugate multiplication for more information.

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