найти значение выражения (5x-7y)^2-(7x-5y)^2 при x=2 y= -1 - №16917195

найти значение выражения (5x-7y)^2-(7x-5y)^2 при x=2 y= -1
- Предмет:
  Алгебра
- Автор:
  deannaatkinson
- 6 лет назад

Ответы 1

(5x-7y)^2-(7x-5y)^2 при x=2 y= -1 (10 +7)^2 - (14 +5)^2 = 17^2 - 19^2 = 289 - 361= - 72
- Автор:
  samirdodson
- 6 лет назад
- 0
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