Решите неравенства c помощью параболы и дискриминанта(так просит училка) 1) - №24954729

Решите неравенства c помощью параболы и дискриминанта(так просит училка)
1) 10x^2-6x+14x^2-5x+2 ≤ 56
2) 2x^2>36
3)8x^2<-15x^2-2x+13
4)0>-15x^2-2x+13
5)8x^2-15x+45 неравно нулю
6)-3x^2+2x+5 ≤ 0
7)25x^2-30x+9>0
8)2x^2+5x-500>0
- Предмет:
  Алгебра
- Автор:
  sundayflz5
- 5 лет назад

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