\(\boxed{\text{311.}\text{\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\)
Пояснение.
Решение.
\[\textbf{а)}\ |a| = a;\ \ a > 0.\]
\[\textbf{б)}\ |c| = - c;\ \ \ c < 0.\]
\[\textbf{в)}\ \left| a^{2} \right| = a^{2}.\]
\[\textbf{г)}\ \left| a^{3} \right| = a^{3};\ \ a > 0.\]
\[\textbf{д)}\ \left| a^{3} \right| = - a^{3};\ \ a < 0.\]