Помогите решить 3х^2+19х+28=0

Помогите решить
3х^2+19х+28=0
- Предмет:
  Алгебра
- Автор:
  reese66
- 5 лет назад

Ответы 2

А = 3, b = 19, c = 28.D = b^2 - 4ac = 19^2 — 4•3•28 = 361 - 336 = 25D > 0, то x первое = (-b - кв. корень D) : 2a = (-19 - 5) : 6 = -4х второе = (-b + кв. корень D) : 2a = (-19 + 5) : 6 = - 7/3
- Автор:
  abram
- 5 лет назад
- 0
3х²+19х+28=0 D=361-336=25=(⁺₋5)²х₁=(-19+5)/6=-14/6=-2 1/3х₂=(-19-5)/6=-4
- Автор:
  brandon9joa
- 5 лет назад
- 0
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Помогите решить 3х^2+19х+28=0

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Помогите решить
3х^2+19х+28=0