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