\[\boxed{\text{831\ (831).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\]
\[2)\ y( - 2) = 2\]
\[y(0) = 3\ \ \]
\[y(3) = 2\]
\[3)\ y = - 2 \Longrightarrow \ x = 5\]
\[y = 0 \Longrightarrow \ \ x = 4\]
\[y = 2 \Longrightarrow \ \ x = - 2;\ \ \ \ x = 3.\]
\[\boxed{\text{831.\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[x^{6} + 3x^{2}y^{2} + y^{6} =\]
\[= \left( x^{6} + y^{6} \right) + 3x^{2}y^{2} =\]
\[= x^{4} - x^{2}y^{2} + y^{4} + 3x^{2}y^{2} =\]
\[= x^{4} + 2x^{2}y^{2} + y^{4} =\]
\[= \left( x^{2} + y^{2} \right)^{2} = 1^{2} = 1\]
\[Ответ:1.\]