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$�� 482. �� :�) {2x^2+y^2=9, x^2-y^2=3};�) {3x^2-2y^2=1, 2x^2-y^2=1};�) {x^2-3y^2-y=-6, 2x^2-3y^2=-4};�) {2x^2+xy=16,...$

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482. �� :

�) {2x^2+y^2=9, x^2-y^2=3};

�) {3x^2-2y^2=1, 2x^2-y^2=1};

�) {x^2-3y^2-y=-6, 2x^2-3y^2=-4};

�) {2x^2+xy=16, 3x^2+xy-x=18}.

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