anonymous
  • anonymous
Geometry side-spliting Theorem.
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1358229934642:dw|
anonymous
  • anonymous
Use the side-spliting theorem to find x.
anonymous
  • anonymous
|dw:1358230905589:dw|

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anonymous
  • anonymous
the bottom one is messy by ? and 6 equals 15
mathstudent55
  • mathstudent55
When you draw a segment parallel to one side of a trianlge, it splits the other sides into proportional segements. |dw:1358231159770:dw|
anonymous
  • anonymous
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.
mathstudent55
  • mathstudent55
Cross multiply, then FOIL on both sides. (x - 1)(x - 2) = (x + 1)(x - 3)
anonymous
  • anonymous
thanks I'll try that again
mathstudent55
  • mathstudent55
x^2 - 3x + 2 = x^2 - 2x - 3
mathstudent55
  • mathstudent55
Tell me if you get the above.
anonymous
  • anonymous
thats what i got but then x would have to be x^2 - x + 5 = x^2 that would have to be the answer.
mathstudent55
  • mathstudent55
Good. Now subtract x^2 from both sides.
anonymous
  • anonymous
0= -x + 5 then add x to the other side x= 5
mathstudent55
  • mathstudent55
x^2 - 3x + 2 = x^2 - 2x - 3 - x^2 -x^2 ---------------------------- -3x + 2 = -2x - 3 + 2x -2 +2x - 2 ---------------------------- -x = -5 x = 5
mathstudent55
  • mathstudent55
That's it. You got it.
anonymous
  • anonymous
I appreciate all the help, I just didn't know I could subtract 2x. thanks very much.
mathstudent55
  • mathstudent55
You're welcome.

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