\(2{x^2} + 3x - 2 = 0.\)

Câu hỏi: \(2{x^2} + 3x - 2 = 0.\)

A \(S = \left\{ {2;\,\,\frac{1}{2}} \right\}.\)

B \(S = \left\{ { - 2;\,\, - \frac{1}{2}} \right\}.\)

C \(S = \left\{ { - 2;\,\,\frac{1}{2}} \right\}.\)

D \(S = \left\{ {2;\,\, - \frac{1}{2}} \right\}.\)