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Vidya and Vandana solved a quadratic equation. In solving it, Vidya made a mistake in the constant term and got the roots as $6$ and $2$, while Vandana made a mistake in the coefficient of $x$ only and obtained the root as $-7$ and $-1$. The correct roots of the equation are:

  1. $6,-1$
  2. $-7,2$
  3. $-6,-2$
  4. $7,1$
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