Выяснить при каких значениях х имеет смысл выражение: √-3x^2+x+4 5/√x^2+6x+9

Выяснить при каких значениях х имеет смысл выражение:
√-3x^2+x+4

5/√x^2+6x+9
- Предмет:
  Алгебра
- Автор:
  treving6wu
- 6 лет назад

Ответы 1

- 3x² +x +4≥0a)3x² -x -4 ≤ 0;D =1² -4*3(*-4) =49 =7² √D =7 ; x₁ =(1-7)/6 =-1 ;x₂=(1+7)/6 =4/3.(x+1)(x-4/3) ≤ 0 ;x∈[ -1;4/3].ответ :[ -1;4/3].---------------------b) 5 / √x^2+6x+9 x²+6x+9 >0 ; (x+3)² >0 ⇒x≠ - 3.ответ : ( -∞; -3) U (-3;.∞).
- Автор:
  killianfitzpatrick
- 6 лет назад
- 0
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Выяснить при каких значениях х имеет смысл выражение: √-3x^2+x+4 5/√x^2+6x+9

Ответы 1

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Выяснить при каких значениях х имеет смысл выражение:
√-3x^2+x+4

5/√x^2+6x+9