Задание

Запишите системы линейных неравенств, эквивалентных квадратичному неравенству

\(\displaystyle x^2-3x-4\le 0{\small.}\)

\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \)
\(\displaystyle x\)[?|≤|≥|=|>|<][ ],
\(\displaystyle x\)[?|≤|≥|=|>|<][ ]
или
\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \)
\(\displaystyle x\)[?|≤|≥|=|>|<][ ],
\(\displaystyle x\)[?|≤|≥|=|>|<][ ].