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anonymous

  • 5 years ago

I'm doing rational expressions and need help please! How do you simplify: x+y/x-y divided by 1/x- 1/y. Thanks!

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  1. anonymous
    • 5 years ago
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    first you find the common denomiator of (1/x)-(1/y) then you flip it and multiply it by x+y/x-y

  2. anonymous
    • 5 years ago
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    Can you demonstrate please?

  3. anonymous
    • 5 years ago
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    do you mind if i give you a generic version. I would rather you understand then just give you the answer. Is that ok?

  4. anonymous
    • 5 years ago
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    That would be great

  5. anonymous
    • 5 years ago
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    I have gotten to (xy) x+y over (x-y) (y-x) is there anything else I can do?

  6. anonymous
    • 5 years ago
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    ok

  7. anonymous
    • 5 years ago
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    na your done

  8. anonymous
    • 5 years ago
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    Thanks for your help!

  9. anonymous
    • 5 years ago
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    the only thing you could do is factor a negative out. and make it x-y squared on the bottom but that isnt necesary

  10. anonymous
    • 5 years ago
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    What about if you have 5p/6p? can u cancel the p's?

  11. anonymous
    • 5 years ago
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    And also s-1 over (s-1) (s+1) can you cancel the s-1's?

  12. anonymous
    • 5 years ago
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    I'm not too sure about the canceling rules...

  13. anonymous
    • 5 years ago
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    which math are you in? If you dont mind me asking.

  14. anonymous
    • 5 years ago
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    ok so the general rule in dividing variables is. if it is the same variable you subtract the exponents.

  15. anonymous
    • 5 years ago
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    Oh im in algebra 2

  16. anonymous
    • 5 years ago
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    Ok got that

  17. anonymous
    • 5 years ago
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    So could u cancel the p's or s-1's?

  18. anonymous
    • 5 years ago
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    what is the exponent of the p's and x-1's?

  19. anonymous
    • 5 years ago
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    I guess it is just one because the exponents canceled out earlier

  20. anonymous
    • 5 years ago
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    what is anything raised to the 0 power except 0^0

  21. anonymous
    • 5 years ago
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    for instance what is x^0?

  22. anonymous
    • 5 years ago
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    is it one?

  23. anonymous
    • 5 years ago
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    yep

  24. anonymous
    • 5 years ago
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    But they are not to the oth power!

  25. anonymous
    • 5 years ago
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    really? If (x-4)^1/(X-4)^1=(X-4)^0 then (x-4)^0=1

  26. anonymous
    • 5 years ago
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    just to give you a hint i am a math tutor my statements are meant to lead you somewhere i am not asking you questions for no reason lol

  27. anonymous
    • 5 years ago
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    ok thats cool, im still confused tho!

  28. anonymous
    • 5 years ago
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    okok

  29. anonymous
    • 5 years ago
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    um

  30. anonymous
    • 5 years ago
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    so x^2/X^2 you subtract the exponenets leaving you with x^0 right?

  31. anonymous
    • 5 years ago
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    ok

  32. anonymous
    • 5 years ago
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    can you do (x-4)^2/(x-4) for me?

  33. anonymous
    • 5 years ago
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    treat the x-4 as one thing and just worry about the exponenets

  34. anonymous
    • 5 years ago
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    (x-4) (x-4)/(x-4) equals x-4?

  35. anonymous
    • 5 years ago
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    exactly

  36. anonymous
    • 5 years ago
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    what you just did was the subtracted the exponenets. do you understand what i mean?

  37. anonymous
    • 5 years ago
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    YES! Hooray, so that should mean you can cancel the p's and the s-1's?

  38. anonymous
    • 5 years ago
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    what do you think?

  39. anonymous
    • 5 years ago
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    I am only saying that because i want you to be confident.

  40. anonymous
    • 5 years ago
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    I think it is a yes......

  41. anonymous
    • 5 years ago
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    im ok with that =)

  42. anonymous
    • 5 years ago
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    sorry this took so long i really want you to understand it

  43. anonymous
    • 5 years ago
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    Thank u for taking the time to help me! I really appreciate it 8 )

  44. anonymous
    • 5 years ago
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    no problem. I like this place. i will probably hang around, so if you have more questions feel free to ask.

  45. anonymous
    • 5 years ago
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    Haha im sure i will! nite

  46. anonymous
    • 5 years ago
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    nite

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