Giải hệ phương trình: \(\left\{ \begin{array}{l}{x^2} = \left( {2 - y} \right)\left( {2 + y} \right)\\2{x^3} = \left( {x + y} \right)\left( {4 - xy} \right)\end{array} \right.\).
A.\(\left( {1;1 } \right);\left( { - 1 ; - 1 } \right).\)
B.\(\left( {\sqrt 2 ;\sqrt 2 } \right);\left( { - \sqrt 2 ; - \sqrt 2 } \right).\)
C.\(\left( {\sqrt 3 ;\sqrt 3 } \right);\left( { - \sqrt 3 ; - \sqrt 3 } \right).\)
D.\(\left( {\sqrt 5 ;\sqrt 5 } \right);\left( { - \sqrt 5 ; - \sqrt 5 } \right).\)
A.\(\left( {1;1 } \right);\left( { - 1 ; - 1 } \right).\)
B.\(\left( {\sqrt 2 ;\sqrt 2 } \right);\left( { - \sqrt 2 ; - \sqrt 2 } \right).\)
C.\(\left( {\sqrt 3 ;\sqrt 3 } \right);\left( { - \sqrt 3 ; - \sqrt 3 } \right).\)
D.\(\left( {\sqrt 5 ;\sqrt 5 } \right);\left( { - \sqrt 5 ; - \sqrt 5 } \right).\)
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Hóa Học lớp 12
