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Multiple choice

Find the quadratic equation having one root : $2\sqrt3\,-\,4$

  1. $x^2\,-\,4\sqrt{3}x\,-\,4\,=\,0$
  2. $x^2\,-\,8x\,+\,4\,=\,0$
  3. $x^2\,+\,4\sqrt{3}x\,-\,4\,=\,0$
  4. $x^2\,-\,8x\,-\,4\,=\,0$
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