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The students while solving a quadratic equation in $x$, one copied the constant term incorrectly and got the roots 3 and 2. The other copied the constant term and coefficient of $x^2$ as $-6$ and $1$ respectively. The correct roots are:

$(a)\;3,-2 \quad (b)\;-3,2 \quad (c)\;-6,-1 \quad (d)\;6,-1$

(d) 6,-1

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