Решите уравнение Х-4( в корне) + х=6 - №19118037

Решите уравнение
Х-4( в корне) + х=6
- Предмет:
  Математика
- Автор:
  shelly
- 5 лет назад

Ответы 1

( √ x - 4 ) + x = 6 ( √ x - 4 )² = ( 6 - x )²x - 4 ≥ 0 ; x ≥ 4 x - 4 = 36 - 12x + x²x² - 13x + 40 = 0D = 169 - 160 = 9 ; √ D = 3 x1 = ( 13 + 3 ) : 2 = 8 ( ≥ 4 )x2 = ( 13 - 3 ) : 2 = 5 ( ≥ 4 )Ответ 8 ; 5
- Автор:
  cookie19
- 5 лет назад
- 0
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