\( \left \{ \begin{array}{l}3x + y = 1 \ \x - 2y = 5 \end{array} \right. \)
A.\(\left( {x;y} \right) = \left( { - 1; - 2} \right)\)
B.\(\left( {x;y} \right) = \left( {1;2} \right)\)
C.\(\left( {x;y} \right) = \left( { - 1;2} \right)\)
D.\(\left( {x;y} \right) = \left( {1; - 2} \right)\)
A.\(\left( {x;y} \right) = \left( { - 1; - 2} \right)\)
B.\(\left( {x;y} \right) = \left( {1;2} \right)\)
C.\(\left( {x;y} \right) = \left( { - 1;2} \right)\)
D.\(\left( {x;y} \right) = \left( {1; - 2} \right)\)
Loga
Hóa Học lớp 12
