\[\boxed{\text{443\ (443).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[1)\ A = \left\{ 2,\ 5,\ 8 \right\};\ \ B = \{ 8,\ 2,\ 3\};\ \ \]
\[B \cap A = \left\{ 2,\ 8 \right\}.\]
\[2)\ A = \left\{ 0,\ 1,\ 3,\ 4,\ 7 \right\};\ \ B = \{ 0,\ 4,\ 7\};\ \ \]
\[A \cap B = \left\{ 4,\ 0,\ 7 \right\}.\ \]
\[\boxed{\text{443.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\frac{x - 7}{x^{2} - 7x} = 0\]
\[\frac{x - 7}{x(x - 7)} = 0;\ \ x \neq 0;x \neq 7\]
\[\frac{1}{x} = 0\]
\[нет\ корней.\]