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Автор - pomogi9537

Вырази периметр равностороннего треугольника со стороной 4n2 - 2n +3.​

Ответ

Автор - ruslank1460

а = 4n² - 2n +3

Р = 3а = 3(4n² - 2n +3) = 12n² - 6n + 9

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