��.134 �� 10-11 �� (��)

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$�� 134. �� :�) {x^3+y^3-z^3-xyz=-4, x^3-y^3+z^3-xyz=8, -x^3+y^3+z^3-xyz=-2};�) {4x^2+4y+1=0, 4y^2+4z+1=0, 4z^2+4x+1=0};�) {x+y+z=4,...$

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134. �� :

�) {x^3+y^3-z^3-xyz=-4, x^3-y^3+z^3-xyz=8, -x^3+y^3+z^3-xyz=-2};

�) {4x^2+4y+1=0, 4y^2+4z+1=0, 4z^2+4x+1=0};

�) {x+y+z=4, x^2+y^2+z^2=14, xy+xz+yz=9};

�) {x^2+xy+y^2=37, x^2+xz+z^2=28, y^2+yz+z^2=19}.

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