§ Задание 268
\[\boxed{\text{4.\ 268}}\]
\[s = vt\]
\[\textbf{а)}\ 50 \cdot 8 = 400;\]
\[\textbf{б)} - 50 \cdot 8 = - 400;\]
\[\textbf{в)}\ 50 \cdot ( - 8) = - 400;\]
\[\textbf{г)} - 50 \cdot ( - 8) = 400.\]
\[\boxed{\text{4.\ 268}}\]
\[s = vt\]
\[\textbf{а)}\ 50 \cdot 8 = 400;\]
\[\textbf{б)} - 50 \cdot 8 = - 400;\]
\[\textbf{в)}\ 50 \cdot ( - 8) = - 400;\]
\[\textbf{г)} - 50 \cdot ( - 8) = 400.\]