Задание
или
Запишите системы линейных неравенств, эквивалентных квадратичному неравенству
\(\displaystyle -9x^2+45x+54\ge0{\small.}\)
\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \) | \(\displaystyle x\)[?|≤|≥|=|>|<][ ], |
\(\displaystyle x\)[?|≤|≥|=|>|<][ ] |
\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[10px] 1 \end{aligned}} \right. \) | \(\displaystyle x\)[?|≤|≥|=|>|<][ ], |
\(\displaystyle x\)[?|≤|≥|=|>|<][ ]. |