\[\boxed{\text{388.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
Пояснение.
Решение.
\[\textbf{а)}\ 2^{4} = 2 \cdot 2 \cdot 2 \cdot 2 = 16\]
\[\textbf{б)}\ 4^{2} = 4 \cdot 4 = 16\]
\[\textbf{в)}\ 5^{3} = 5 \cdot 5 \cdot 5 = 125\]
\[\textbf{г)}\ 3^{5} = 3 \cdot 3 \cdot 3 \cdot 3 \cdot 3 = 243\]
\[\textbf{д)}\ (7,8)^{2} = 7,8 \cdot 7,8 = 60,84\]
\[\textbf{е)}\ ( - 1,5)^{3} =\]
\[= ( - 1,5) \cdot ( - 1,5) \cdot ( - 1,5) =\]
\[= - 3,375\]
\[\textbf{ж)}\ \left( \frac{3}{4} \right)^{4} = \frac{3}{4} \cdot \frac{3}{4} \cdot \frac{3}{4} \cdot \frac{3}{4} = \frac{81}{256}\]
\[\textbf{и)}\ \left( 1\frac{1}{3} \right)^{4} = \left( \frac{4}{3} \right)^{4} = \frac{4}{3} \cdot \frac{4}{3} \cdot \frac{4}{3} \cdot \frac{4}{3} =\]
\[= \frac{256}{81} = 3\frac{13}{81}\]
\[к)\ \left( - 2\frac{1}{2} \right)^{3} = \left( - \frac{5}{2} \right)^{3} =\]
\[= \left( - \frac{5}{2} \right) \cdot \left( - \frac{5}{2} \right) \cdot \left( - \frac{5}{2} \right) =\]
\[= - \frac{125}{8} = - 15\frac{5}{8}.\]
\[\boxed{\text{388\ (388).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)} - 1^{3} + ( - 2)^{3} = - 1 - 8 = - 9\]
\[\textbf{б)} - 6^{2} - ( - 1)^{4} = - 36 - 1 =\]
\[= - 37\]
\[\textbf{в)} - 8^{3} + ( - 3)^{3} = - 512 - 27 =\]
\[= - 539\]
\[\textbf{г)}\ 10 - 5 \cdot 2^{4} = 10 - 5 \cdot 16 =\]
\[= 10 - 80 = - 70\]
\[\textbf{д)}\ 2 \cdot 3^{4} - 3 \cdot 2^{4} =\]
\[= 2 \cdot 81 - 3 \cdot 16 = 162 - 48 =\]
\[= 114\]
\[\textbf{е)}\ 2 \cdot 5^{3} + 5 \cdot 2^{3} =\]
\[= 2 \cdot 125 + 5 \cdot 8 = 250 + 40 =\]
\[= 290\]
\[\textbf{ж)}\ 3^{4} - \left( \frac{2}{5} \right)^{2} \cdot 6\frac{1}{4} =\]
\[= 81 - \frac{4}{25} \cdot \frac{25}{4} = 81 - 1 = 80\]
\[\textbf{з)}\ 0,2 \cdot 3^{3} - 0,4 \cdot 2^{4} =\]
\[= 0,2 \cdot 27 - 0,4 \cdot 16 = 5,4 - 6,4 =\]
\[= - 1\]
\[\textbf{и)}\ 8 \cdot {0,5}^{3} + 25 \cdot {0,2}^{2} =\]
\[= 8 \cdot 0,125 + 25 \cdot 0,04 = 1 + 1 =\]
\[= 2\]