СРОЧНО!!! При каких значениях параметра а уравнение (a-x)^2 = x^2 - 3ax - 4 имеет

СРОЧНО!!!
При каких значениях параметра а уравнение (a-x)^2 = x^2 - 3ax - 4 имеет единственное решение?
- Предмет:
  Алгебра
- Автор:
  bonnieford
- 5 лет назад

Ответы 3

Спасибо
- Автор:
  waynephw0
- 5 лет назад
- 0
Сори, неверно решил .... Как правильно - не могу сказать. Отметь нарушение.
- Автор:
  tramp
- 5 лет назад
- 0
Упростим :(а - х)² = х² - 3ах - 4а² - 2ах + х² = х² - 3ах - 4а² - 2ах + х² - х² + 3ах + 4 = 0а² + ах + 4 = 0При D = 0 ⇒ уравнение имеет единственное решениеD = 1² - 4*a*4 = 1 - 16a = 01 - 16a = 0-16a = - 116a= 1a = 1/16 a = 0.0625
- Автор:
  claudiauvti
- 5 лет назад
- 0
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1. What did Alexander Bell's father invent?
2. Whom and where did Alexander Bell teach?
3. What did Alexander Bell begin to work at when he was nineteen years old?
4. What device did A. Bell use which made his invention work well?
5. How many years later was the first transcontinental telephone line opened?
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Alexander Graham Bell was born in Edinburgh in 1847. His father was a world-famous teacher of speech and the inventor of a system which he called “Visible Speech”. It helped deaf persons to pronounce words they could not hear. Alexander chose the same profession, and as his father became a teacher of the deaf, he moved to the United States and began to teach deaf children to speak. At the same time he worked at improving his father's invention.
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"Mr. Watson, come here I want you."
It was on the 10th of March, 1876. Alexander Graham Bell had invented the telephone.
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СРОЧНО!!! При каких значениях параметра а уравнение (a-x)^2 = x^2 - 3ax - 4 имеет единственное решение?

Ответы 3

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СРОЧНО!!!
При каких значениях параметра а уравнение (a-x)^2 = x^2 - 3ax - 4 имеет единственное решение?