Nghiệm của hệ phương trình \( \left \{ \begin{array}{l}xy + x + y = 5 \ \{x^2}y + {y^2}x = 6 \end{array} \right. \) là :
A.\(\left( {1;2} \right),\,\,\left( {2;1} \right)\)
B.\(\left( {0;1} \right),\,\,\left( {1;0} \right)\)
C.\(\left( {0;2} \right),\,\,\left( {2;0} \right)\)
D.\(\left( {2;\dfrac{1}{2}} \right),\,\,\left( {\dfrac{1}{2};2} \right)\)
A.\(\left( {1;2} \right),\,\,\left( {2;1} \right)\)
B.\(\left( {0;1} \right),\,\,\left( {1;0} \right)\)
C.\(\left( {0;2} \right),\,\,\left( {2;0} \right)\)
D.\(\left( {2;\dfrac{1}{2}} \right),\,\,\left( {\dfrac{1}{2};2} \right)\)
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Hóa Học lớp 12
