Найдите сумму корней уравнения: - 3x^2+18x+21=0 - Дата: 11.11.2019, Автор: meredithhujz - Znanija.Site

Найдите сумму корней уравнения: - 3x^2+18x+21=0
- Предмет:
  Алгебра
- Автор:
  meredithhujz
- 5 лет назад

Ответы 1

$-3x^2 + 18x + 21 = 0 D = 576 x1 = -1 ; x2 = 7 -1+7 = 6$
- Автор:
  simonynfb
- 5 лет назад
- 0
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