Решите неравенство 4х-9х^2/10-x>0

Question

Решите неравенство 4х-9х^2/10-x>0

Answer 1

4х - 9х^2/10 - х > 0

3х - 0.9х^2 > 0 | ×(-1)

0.9х^2 - 3х < 0

х (0.9х - 3) < 0

х < 0 0.9х - 3 < 0

0.9х < 3

х < 3.3

Ответ: х € (-~; 0)

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