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$�� 15.6. �� :1) {x^(1/3)-y^(1/3)=2, xy=27};2) {v(x/y)+v(y/x)=5/2, x+y=5};3) {(x+2y)^(1/3)+(x-y+2)^(1/3)=3, 2x+y=7};4)...$

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15.6. �� :

1) {x^(1/3)-y^(1/3)=2, xy=27};

2) {v(x/y)+v(y/x)=5/2, x+y=5};

3) {(x+2y)^(1/3)+(x-y+2)^(1/3)=3, 2x+y=7};

4) {v((3x-2y)/2x)+v(2x/(3x-2y))=2, x^2-8y^2=18-18y}.

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