\[\boxed{\text{323\ (323).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ 4a^{2} - 3ab + b + 8 + \ * =\]
\[= b + 8\]
\[*\ = b + 8 - (4a^{2} - 3ab + b + 8)\]
\[*\ = b + 8 - 4a^{2} + 3ab - b - 8\]
\[*\ = - 4a^{2} + 3ab.\]
\[*\ = - 9a^{3} + 9a - 7ab^{2}\text{.\ }\]
\[\boxed{\text{323.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ ( - 5)^{21} \cdot ( - 5) < ( - 5)^{24}\]
\[5^{22} < 5^{24}\]
\[2)\ ( - 7)^{8} \cdot ( - 7)^{7} > ( - 7)^{17}\]
\[- 7^{15} > - 7^{17}\]