(3x+30)^2 -9x^2=0 решите пожалуйста - Znanija.Site

(3x+30)^2 -9x^2=0
решите пожалуйста
- Предмет:
  Алгебра
- Автор:
  maverickmarks
- 5 лет назад

Ответы 1

( 3х + 30 )² - 9х² = 09х² + 180х + 900 - 9х² = 0180х + 900 = 0180х = -900х = (-900) ÷ 180х = -5.Ответ : -5._____________________Удачи)))))
- Автор:
  schaefer
- 5 лет назад
- 0
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