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-   -   solve quadratic equation from india x^2 - 2x -13 = 0 (https://www.askmehelpdesk.com/showthread.php?t=699527)

  • Sep 4, 2012, 08:01 PM
    Towandadavis
    solve quadratic equation from india x^2 - 2x -13 = 0
    How to solve Indian quadratic equation x^2-2x-13=0
  • Sep 4, 2012, 08:13 PM
    teacherjenn4
    What have you done so far to figure out this problem?
  • Sep 12, 2012, 01:29 PM
    aktime
    Quote:
    Originally Posted by teacherjenn4 View Post
    What have you done so far to figure out this problem?
    x^ - 2x - 13 = 0
    x^ - 2x = 13
    4x^ - 8x = 4x^ - 8x + 4 = 52 + 4 4x^ - 8x + 4 = 56
    2x - 2 = ±√(56) (d)
    2x-2 = ±√(4*14)
    2x-2 = ±2√(14)
    2x = 2+2√(14).. . 2x = 2-2√(14)
    x = 1 + √(14).. . x = 1 - √(14)

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