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anonymous

  • 5 years ago

Does anybody know how to solve rational equations with polynomial denominators?

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  1. anonymous
    • 5 years ago
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    if so comment and i will post the question ^^

  2. Yuki
    • 5 years ago
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    I do

  3. Yuki
    • 5 years ago
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    I helped someone with that so I will guid you there

  4. anonymous
    • 5 years ago
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    Alrighty thx!! :) the problem is: x = 1 +1 2x+4 x+2

  5. anonymous
    • 5 years ago
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    i dont know how to do the lines underneath ^^

  6. Yuki
    • 5 years ago
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    it's in clark's problem the idea is there, so if you want to know the steps they are all there

  7. anonymous
    • 5 years ago
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    Alrighty!!! can u link me maybe?

  8. anonymous
    • 5 years ago
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    http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4dc4893ba5918b0b16d88120

  9. Yuki
    • 5 years ago
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    actually, yours is an equation. not an inequality, so nvm

  10. Yuki
    • 5 years ago
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    uh... I just noticed this but what did I do ? lol there are so many postings... creepy

  11. anonymous
    • 5 years ago
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    Wow!! that looks like exactely what i need!!! :D thanks a bunch!!! :) Totally giving u medals lol :)

  12. Yuki
    • 5 years ago
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    wait up 1<3, yours is different and much easier so stay here and listen

  13. anonymous
    • 5 years ago
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    alright im listening!! :)

  14. Yuki
    • 5 years ago
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    \[{x \over 2x +4 } = {1 \over x+2 } +1 \]

  15. Yuki
    • 5 years ago
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    right ?

  16. anonymous
    • 5 years ago
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    You can also watch Sal on khanacademy: http://www.khanacademy.org/v/solving-rational-equations-1?p=Algebra%20I%20Worked%20Examples

  17. anonymous
    • 5 years ago
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    Alright u guys have helped me massively!! :) Now i gtg and do more work :P might not be on later depends on if i need help or not or if i have time ^_^ lol

  18. Yuki
    • 5 years ago
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    the first thing you want to do here is to find out the common denominator for all terms you have,

  19. anonymous
    • 5 years ago
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    gl!

  20. anonymous
    • 5 years ago
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    Thanks :)

  21. Yuki
    • 5 years ago
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    I'll leave the steps so that you can look at it later ok ?

  22. anonymous
    • 5 years ago
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    Ahww thank you that is extremely helpful of u =3

  23. anonymous
    • 5 years ago
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    cuz i k i will definitely look at the steps ^_^

  24. Yuki
    • 5 years ago
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    the LCD is 2x+4, so if you multiply that on both sides you will get \[x = 2 + 2x+4\]

  25. Yuki
    • 5 years ago
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    if you solve that x = -6

  26. Yuki
    • 5 years ago
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    the only thing you have to be careful is to make sure that when you start the problem, you identify the "extraneous solutions' basically the x's that makes any denominator in our eqn =0 since x = -2 is such number, it will never be the answer

  27. Yuki
    • 5 years ago
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    since we did not deduce that x = -2, we just ignore it, but if x =-2 was what we deduced, then there is no solution. okay, hope you do well.

  28. anonymous
    • 5 years ago
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    Thanks a BUNCH!!!! ur steps totally helped me :)

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