A.\(x \in \left\{ {1;\,\,2} \right\}\)
B.\(x \in \left\{ { - 4;\,\, - 1;\,\,1;\,\,4} \right\}\)
C.\(x \in \left\{ { - 2;\,\, - 1;\,\,1;\,\,2} \right\}\)
D.\(x \in \left\{ { - 2;\,\,0;\,\,2} \right\}\)

Các câu hỏi liên quan