Предмет: Алгебра, автор: xromowalesia

Решите неравенство : 3х^2+4x / 9-x>0

Ответы

Автор ответа: Кулшат

0

$3 x^{2} + \frac{4x}{9} -x больше 0 ; 27 x^{2} +4x - 9x больше 0;$

27x ² - 5x больше 0; х (27х - 5) больше 0; х больше 0; х больше 5/27;

отв: (-∞ ;5/27) ∪ (0 ;+∞)

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