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Консультация № 190628
03.03.2017, 23:47
0.00 руб.
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Прикрепленные файлы:
Обсуждение
04.03.2017, 04:43
общий
это ответ
Здравствуйте, svrvsvrv!
Перепишем уравнение в виде x[sup]2[/sup] - 10x + 29 = [$177$]4. Оно эквивалентно двум квадратным уранениям
x[sup]2[/sup] - 10x + 25 = 0 и x[sup]2[/sup] - 10x + 33 = 0. Корни квадратного уравнения ax[sup]2[/sup] + bx + c = 0 определяются по формуле
Для первого уравнения a = 1, b = -10, c = 25 и
Для второго уравнения a = 1, b = -10, c = 33 и
- решения нет. Следовательно, имеем единственный корень x = 5.
Перепишем уравнение в виде x[sup]2[/sup] - 10x + 29 = [$177$]4. Оно эквивалентно двум квадратным уранениям
x[sup]2[/sup] - 10x + 25 = 0 и x[sup]2[/sup] - 10x + 33 = 0. Корни квадратного уравнения ax[sup]2[/sup] + bx + c = 0 определяются по формуле
Для первого уравнения a = 1, b = -10, c = 25 и
Для второго уравнения a = 1, b = -10, c = 33 и
- решения нет. Следовательно, имеем единственный корень x = 5.
5
Большое спасибо!
04.03.2017, 09:30
общий
Адресаты:
Второе уравнение не нужно и решать, потому что модуль не может быть равным отрицательному числу.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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