Giải hệ phương trình: \(\left\{ \begin{array}{l}4{x^2} + 4x - {y^2} = - 1\\4{x^2} - 3xy + {y^2} = 1\end{array} \right.\).
A.\(\left( {0;1} \right);\left( {0; 0} \right);\left( { \frac{1}{2};0} \right)\)
B.\(\left( {0;1} \right);\left( {0; - 1} \right);\left( { - \frac{1}{2};0} \right)\)
C.\(\left( {1;1} \right);\left( {0; - 1} \right);\left( { \frac{1}{2};0} \right)\)
D.\(\left( {1;1} \right);\left( {0; 0} \right);\left( { - \frac{1}{2};0} \right)\)
A.\(\left( {0;1} \right);\left( {0; 0} \right);\left( { \frac{1}{2};0} \right)\)
B.\(\left( {0;1} \right);\left( {0; - 1} \right);\left( { - \frac{1}{2};0} \right)\)
C.\(\left( {1;1} \right);\left( {0; - 1} \right);\left( { \frac{1}{2};0} \right)\)
D.\(\left( {1;1} \right);\left( {0; 0} \right);\left( { - \frac{1}{2};0} \right)\)
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Hóa Học lớp 12
