\[\boxed{\mathbf{549\ (549)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
Пояснение.
Решение.
\[1)\ 9 \cdot 9 \cdot 9 \cdot 9 \cdot 9 = 9^{5}\]
\[2)\ 10 \cdot 10 \cdot 10 = 10^{3}\]
\[3)\ a \cdot a \cdot a \cdot a = a^{4}\]
\[4)\ x \cdot x \cdot x \cdot x \cdot x \cdot x = x^{6}\]
\[5)\ 3m \cdot 3m \cdot 3m \cdot 3m \cdot 3m =\]
\[= (3m)^{5}\]
\[\boxed{\ \mathbf{549\ (494)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ (x - 23)\ :26 = 8\]
\[x - 23 = 8 \cdot 26\]
\[x - 23 = 208\]
\[x = 208 + 23\]
\[x = 231\]
\[Ответ:231.\]
\[2)\ 1728\ :(56 - x) = 36\]
\[56 - x = 1728\ :36\]
\[56 - x = 48\]
\[x = 56 - 48\]
\[x = 8\]
\[Ответ:8.\]