��.4.4 �� 9 �� (��)

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$�� 4.4. �� :�) {x=1, x^2-2y=-3}; �) {y=4, x^2+y=4};�) {x^2+y=2, 2x-y=1}; �) {x^2-y=7, 2x-3y=0};�) {xy=4, 2x-y=2}; �) {xy=6,...$

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4.4. �� :

�) {x=1, x^2-2y=-3}; �) {y=4, x^2+y=4};

�) {x^2+y=2, 2x-y=1}; �) {x^2-y=7, 2x-3y=0};

�) {xy=4, 2x-y=2}; �) {xy=6, x-2y+4=0}.

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