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ivatszhpk33

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Решить систему: {x^2+3*y^2-x*y-4*y=-1, x^2-y^2+3*y=0}...
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РЕШИТЬ СИСТЕМУ: a). x^3+y^3+x*y*(x+y)=13 x^2*y^2*(x^2+y^2)=468 b). x^3+y^3=1 x...
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