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Консультация № 190627
03.03.2017, 23:45
0.00 руб.
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Здравствуйте! Прошу помощи в следующем вопросе:
Прикрепленные файлы:
Обсуждение
04.03.2017, 04:33
общий
это ответ
Здравствуйте, svrvsvrv!
Равенство выполняется, если x[sup]2[/sup] + 2x - 4 = 0 или x[sup]2[/sup] + 2x + 2 = 0. То есть необходимо найти корни двух квадратных уравнений вида ax[sup]2[/sup] + bx + c = 0, которые определяются по формуле
Для первого уравнения a = 1, b = 2, c = -4 и
Для второго уравнения a = 1, b = 2, c = 2 и
- решения нет. Следовательно, имеем только два корня: x[sub]1[/sub] = -1 + [$8730$]5 и x[sub]2[/sub] = -1 - [$8730$]5.
Равенство выполняется, если x[sup]2[/sup] + 2x - 4 = 0 или x[sup]2[/sup] + 2x + 2 = 0. То есть необходимо найти корни двух квадратных уравнений вида ax[sup]2[/sup] + bx + c = 0, которые определяются по формуле
Для первого уравнения a = 1, b = 2, c = -4 и
Для второго уравнения a = 1, b = 2, c = 2 и
- решения нет. Следовательно, имеем только два корня: x[sub]1[/sub] = -1 + [$8730$]5 и x[sub]2[/sub] = -1 - [$8730$]5.
5
Спасибо. Вы даёте подробное объяснение решения. Отличная консультация.
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