\[\boxed{\mathbf{П.\ 79}}\]
\[\textbf{а)}\ (3,3)^{2} + ( - 0,3)^{2} =\]
\[= 10,89 + 0,09 = 10,98\]
\[\textbf{б)}\ ( - 0,3 + 0,2)^{2} = ( - 0,1)^{2} =\]
\[= 0,01\]
\[\textbf{в)}\ \left( - \frac{1}{4} \right)^{3} - \left( \frac{3}{4} \right)^{3} = \frac{1}{64} - \frac{27}{64} =\]
\[= - \frac{26}{64} = - \frac{13}{32}\]
\[\textbf{г)}\ \left( - \frac{1}{6} + \frac{5}{6} \right)^{3} = \left( \frac{4}{6} \right)^{3} = \left( \frac{2}{3} \right)^{3} =\]
\[= \frac{8}{27}\]