\[- 4a^{3}\]
\[a = - 9:\]
\[- 4 \cdot ( - 9)^{3} = - 4 \cdot ( - 729) = 2916;\]
\[a = - 0,5:\]
\[- 4 \cdot ( - 0,5)^{3} = - 4 \cdot ( - 0,125) = 0,5;\]
\[a = 0:\]
\[- 4 \cdot 0^{3} = - 4 \cdot 0 = 0;\]
\[a = 3:\]
\[- 4 \cdot 3^{3} = - 4 \cdot 27 = - 108.\]
\[a = 10:\]
\[- 4 \cdot 10^{3} = - 4 \cdot 1000 = - 4000.\]