\[\boxed{\text{657\ (657).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ x² + y² + 8x - 10y + 41 = 0\]
\[\left( x^{2} + 8x + 16 \right) + \left( y^{2} - 10y + 25 \right) =\]
\[= 0\]
\[(x + 4)^{2} + (y - 5)^{2} = 0\]
\[x = - 4,\ \ y = 5\]
\[Ответ:при\ \ x = - 4,\ y = 5.\]
\[2)\ x² + 37y² + 12xy - 2y + 1 =\]
\[= 0\]
\[\left( x^{2} + 12xy + 36y^{2} \right) + \left( y^{2} - 2y + 1 \right) =\]
\[= 0\]
\[(x + 6y)^{2} + (y - 1)^{2} = 0\]
\[y = 1,\ \ x = - 6y = - 6 \cdot 1 =\]
\[= - 6\]
\[Ответ:при\ x = - 6,\ y = 1.\]