Giải hệ phương trình sau :
$\left\{\begin{matrix} x^2+y^2=3x-4y+1\\3x^2(x^2+9)-2y^2(y^2+9)=18(x^3+y^3)-2y^2(7-y)+3 \end{matrix}\right.$
$\left\{\begin{matrix} x^2+y^2=3x-4y+1\\3x^2(x^2+9)-2y^2(y^2+9)=18(x^3+y^3)-2y^2(7-y)+3 \end{matrix}\right.$
Started By 25 minutes, 21-10-2013 - 21:09
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Posted 21-10-2013 - 21:09
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