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gulnvataasofia
@gulnvataasofia
May 2022
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b²+6b=91 помогите пожалуйста
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TheDeformaZz
Ответ:b1 = 7b2 = -13Пошаговое объяснение:==============================b² + 6b = 91Перенесём всё в левую частьb² + 6b - 91 = 0D = 6² - 4 * 1 * (-91) = 36 + 364 = 400 (20²)b1 = (-6 + 20)/2 = 14/2 = 7b2 = (-6 - 20)/2 = -26/2 = -13==============================
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