Задание
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Запишите системы линейных неравенств, эквивалентных квадратичному неравенству
\(\displaystyle \frac{x+9}{x+79}\le 0{\small.}\)
\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \) | \(\displaystyle x+9\)[?|≤|≥|=|>|<]\(\displaystyle 0{\small ,}\) |
\(\displaystyle x+79\)[?|≤|≥|=|>|<]\(\displaystyle 0\) |
\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \) | \(\displaystyle x+9\)[?|≤|≥|=|>|<]\(\displaystyle 0{\small ,}\) |
\(\displaystyle x+79\)[?|≤|≥|=|>|<]\(\displaystyle 0{\small .}\) |