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anonymous

  • 5 years ago

m^2 + 2m - 3/m^2 +4m -5 x m^2 - 3m - 10/m^2 + 5m + 6 i got -3m/10m

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  1. anonymous
    • 5 years ago
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    m^2 + 2m - 3/m^2 +4m -5 times m^2 - 3m - 10/m^2 + 5m + 6 i got -3m/10m

  2. anonymous
    • 5 years ago
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    no i don't think that is correct

  3. anonymous
    • 5 years ago
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    neither do i :p

  4. anonymous
    • 5 years ago
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    after factoring numerator is \[(m-1)(m+3)(m-5)(m+2)\]

  5. anonymous
    • 5 years ago
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    denominator is \[(m+5)(m-1)(m+3)(m+2)\]

  6. anonymous
    • 5 years ago
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    oh i didnt factor :|

  7. anonymous
    • 5 years ago
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    gotta factor and cancel.

  8. anonymous
    • 5 years ago
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    common factor are m-1, m+3, m+2

  9. anonymous
    • 5 years ago
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    can you help me with one more?

  10. anonymous
    • 5 years ago
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    10-5x/3 divided by x-2/12x short one

  11. anonymous
    • 5 years ago
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    leaving \[\frac{m-5}{m+5}\]

  12. anonymous
    • 5 years ago
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    \[\frac{10-5x}{3}\div\frac{x-2}{12x}\]?

  13. anonymous
    • 5 years ago
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    exactly

  14. anonymous
    • 5 years ago
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    just like with regular fraction invert and multiply

  15. anonymous
    • 5 years ago
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    i got 120x-60x^2/3x-6

  16. anonymous
    • 5 years ago
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    \[\frac{10-5x}{3}\times \frac{12x}{x-2}\]

  17. anonymous
    • 5 years ago
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    cancel first, multiply last

  18. anonymous
    • 5 years ago
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    what do i cancel out?

  19. anonymous
    • 5 years ago
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    \[\frac{5(x-2)\times 12x}{3(x-2)}\]

  20. anonymous
    • 5 years ago
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    cancel the 3 and the x - 2

  21. anonymous
    • 5 years ago
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    leaving you with \[5\times 4x=20x\]

  22. anonymous
    • 5 years ago
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    oopsssssssssss

  23. anonymous
    • 5 years ago
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    wrong sorry

  24. anonymous
    • 5 years ago
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    sorry give me a second i factored incorrectly

  25. anonymous
    • 5 years ago
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    cancel the x-2 not the 3

  26. anonymous
    • 5 years ago
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    hold on

  27. anonymous
    • 5 years ago
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    \[\frac{10-5x}{3}\times \frac{12x}{x-2}=\frac{5(2-x)\times 12x}{3(x-2)}\]

  28. anonymous
    • 5 years ago
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    i factored incorrectly at first. sorry.

  29. anonymous
    • 5 years ago
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    now 3 goes in to 12 4 times so you can cancel the 3 and replace the 12 by a 4

  30. anonymous
    • 5 years ago
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    yea i saw that but i didnt know cus ur the one with the ansers :p

  31. anonymous
    • 5 years ago
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    and finally \[\frac{2-x}{x-2}=-1\]

  32. anonymous
    • 5 years ago
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    hope that is clear

  33. anonymous
    • 5 years ago
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    so you can cancel the 2-x and the x-2 but make sure to change the sign, because it is -1 and not 1

  34. anonymous
    • 5 years ago
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    whered the 5 go?

  35. anonymous
    • 5 years ago
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    still up there. so you get \[-20x\]

  36. anonymous
    • 5 years ago
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    ohk thanks

  37. anonymous
    • 5 years ago
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    \[5\times 5x\times -1=-20x\]

  38. anonymous
    • 5 years ago
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    typo

  39. anonymous
    • 5 years ago
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    \[5\times 4x\times -1=-20x\]

  40. anonymous
    • 5 years ago
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    so its -20x/x-2?

  41. anonymous
    • 5 years ago
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    nope

  42. anonymous
    • 5 years ago
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    x-2 in denominator canceled with 2-x in numerator to give -1

  43. anonymous
    • 5 years ago
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    so there is no denominator at all.

  44. anonymous
    • 5 years ago
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    just -20x

  45. anonymous
    • 5 years ago
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    oh.

  46. anonymous
    • 5 years ago
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    okay thank you

  47. anonymous
    • 5 years ago
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    is it clear that \[\frac{2-x}{x-2}=-1\]?

  48. anonymous
    • 5 years ago
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    i dont see why it turned into -1

  49. anonymous
    • 5 years ago
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    the top is the negative of the bottom

  50. anonymous
    • 5 years ago
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    try it with numbers:\[\frac{2-5}{5-2}=-1\]

  51. anonymous
    • 5 years ago
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    ah. i get it now

  52. anonymous
    • 5 years ago
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    \[\frac{2-10}{10-2}=-1\]

  53. anonymous
    • 5 years ago
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    -3/3 = -1

  54. anonymous
    • 5 years ago
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    -8/8=-1

  55. anonymous
    • 5 years ago
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    a good trick to know\[\frac{a-b}{b-a}=-1\]

  56. anonymous
    • 5 years ago
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    ok well im gettin off now thank you

  57. anonymous
    • 5 years ago
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    yes the top is the negative of the bottom that is why you can cancel

  58. anonymous
    • 5 years ago
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    welcome

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