\[\boxed{\text{265\ (265).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\textbf{а)}\ 2x^{2} - 6x^{5} + 1 = 0\ \]
\[степень\ 5;\ \ \]
\[\textbf{б)}\ \ x^{6} - 4x^{5} + 1 = 0\]
\[степень\ 6;\ \ \]
\[\textbf{в)}\ \frac{1}{x}x^{5} = 0\]
\[степень\ 5;\]
\[\textbf{г)}\ (x + 8)(x - 7) = x^{2} + 8x -\]
\[- 7x - 56 = x^{2} + x - 56 = 0\]
\[степень\ 2;\]
\[\textbf{д)}\ \frac{x^{\backslash 2}}{2} - \frac{x}{4} = 5^{\backslash 4}\]
\[2x - x = 20\]
\[x = 20\]
\[степень\ 1;\ \]
\[\textbf{е)}\ 5x^{3} - 5x\left( x^{2} + 4 \right) = 17\]
\[5x^{3} - 5x^{3} - 20x - 17 = 0\]
\[- 20x - 17 = 0;\ \ \]
\[\ степень\ \ 1.\]