\(3{x^2} - 3x = \left( {x - 1} \right)\left( {x + 3} \right)\)
A.\(S = \left\{ {\dfrac{3}{2};\,\, - 1} \right\}\)
B.\(S = \left\{ { - \dfrac{3}{2};\,\,1} \right\}\)
C.\(S = \left\{ {\dfrac{3}{2};\,\,1} \right\}\)
D.\(S = \left\{ { - \dfrac{3}{2};\,\, - 1} \right\}\)

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