\[\boxed{\text{428\ (428).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \left( \text{xy} \right)^{4} = x^{4} \cdot y^{4}\]
\[\textbf{б)}\ (a \cdot b \cdot c)^{5} = a^{5} \cdot b^{5} \cdot c^{5}\]
\[\textbf{в)}\ (2x)^{3} = 2^{3} \cdot x^{3} = 8x^{3}\]
\[\textbf{г)}\ (3a)^{2} = 3^{2} \cdot a^{2} = 9a^{2}\]
\[\textbf{д)}\ ( - 5x)^{3} = ( - 5)^{3} \cdot x^{3} =\]
\(= - 125x^{3}\)
\[\textbf{и)}\ \left( - 10\text{ab} \right)^{2} = ( - 10)^{2} \cdot a^{2} \cdot b^{2} =\]
\[= 100a^{2}b^{2}\]
\[\textbf{ж)}\ ( - 0,2xy)^{4} = ( - 0,2)^{4}x^{4}y^{4} =\]
\[= 0,0016x^{4}y^{4}\]
\[\textbf{з)}\ ( - 0,5bd)^{3} = ( - 0,5)^{3}\ b^{3}d^{3} =\]
\[= - 0,125b^{3}d^{3}\]