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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    i wanted to know how to do it though but i'll just work backward

  2. anonymous
    • one year ago
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    @Loser66

  3. anonymous
    • one year ago
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    @Astrophysics

  4. Astrophysics
    • one year ago
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    You can use the rational zero theorem, where you look at your last term and your first term, so we have \[\frac{ \text{factors of 20} }{ \text{factors of 1} }\]

  5. Astrophysics
    • one year ago
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    I think that's a pretty easy way to do it :), so list your factors but remember there are positive and negative terms.

  6. Astrophysics
    • one year ago
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    So since it's a polynomial we can treat the first term as P and last term as Q\[\frac{ P }{ Q } = \frac{ \text{factors of 20} }{ \text{factors of 1} }\] so just a nicer way of putting it.

  7. Astrophysics
    • one year ago
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    So what are the factors of 20?

  8. anonymous
    • one year ago
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    20 and 1, 2 and 10, 4 and 5

  9. OregonDuck
    • one year ago
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    come on human calculator XD

  10. Astrophysics
    • one year ago
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    Factors of 20 are 1,2,4,5,10,20 so you got that :) now what are the factors of 1

  11. anonymous
    • one year ago
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    1

  12. Astrophysics
    • one year ago
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    But remember it's positive and negative!

  13. anonymous
    • one year ago
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    so 1 and 1, -1 and -1

  14. Astrophysics
    • one year ago
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    So we have \[\frac{ P }{ Q } = \pm \frac{ 1,2,4,5,10,20 }{ 1 } = \pm 1,2,4,5,10,20 \] :)

  15. Astrophysics
    • one year ago
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    Easy peasy right?

  16. anonymous
    • one year ago
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    yup. Is that positive negative for all of them?

  17. anonymous
    • one year ago
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    so the answer is c, right?

  18. Astrophysics
    • one year ago
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    Yup! This \[\pm \] indicates it has a positive value and negative, and yup that sounds good!

  19. anonymous
    • one year ago
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    i fanned you, you are awesome!

  20. Astrophysics
    • one year ago
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    Haha, thanks! It's always fun to learn with people!

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