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grayp Group Title

Geometry side-spliting Theorem.

  • one year ago
  • one year ago

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  1. grayp Group Title
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    |dw:1358229934642:dw|

    • one year ago
  2. grayp Group Title
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    Use the side-spliting theorem to find x.

    • one year ago
  3. grayp Group Title
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    |dw:1358230905589:dw|

    • one year ago
  4. grayp Group Title
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    the bottom one is messy by ? and 6 equals 15

    • one year ago
  5. mathstudent55 Group Title
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    When you draw a segment parallel to one side of a trianlge, it splits the other sides into proportional segements. |dw:1358231159770:dw|

    • one year ago
  6. grayp Group Title
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    Yeah I did that but my whats the correct answer for x? I foiled the numbers then tried to factor but that didn't work.

    • one year ago
  7. mathstudent55 Group Title
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    Cross multiply, then FOIL on both sides. (x - 1)(x - 2) = (x + 1)(x - 3)

    • one year ago
  8. grayp Group Title
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    thanks I'll try that again

    • one year ago
  9. mathstudent55 Group Title
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    x^2 - 3x + 2 = x^2 - 2x - 3

    • one year ago
  10. mathstudent55 Group Title
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    Tell me if you get the above.

    • one year ago
  11. grayp Group Title
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    thats what i got but then x would have to be x^2 - x + 5 = x^2 that would have to be the answer.

    • one year ago
  12. mathstudent55 Group Title
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    Good. Now subtract x^2 from both sides.

    • one year ago
  13. grayp Group Title
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    0= -x + 5 then add x to the other side x= 5

    • one year ago
  14. mathstudent55 Group Title
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    x^2 - 3x + 2 = x^2 - 2x - 3 - x^2 -x^2 ---------------------------- -3x + 2 = -2x - 3 + 2x -2 +2x - 2 ---------------------------- -x = -5 x = 5

    • one year ago
  15. mathstudent55 Group Title
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    That's it. You got it.

    • one year ago
  16. grayp Group Title
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    I appreciate all the help, I just didn't know I could subtract 2x. thanks very much.

    • one year ago
  17. mathstudent55 Group Title
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    You're welcome.

    • one year ago
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