Номер 216, страница 57 - гдз по алгебре 8 класс учебник Дорофеев, Суворова

Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета

Авторы: Дорофеев Г. В., Суворова С. Б., Бунимович Е. А., Кузнецова Л. В., Минаева С. С., Рослова Л. О.

Тип: Учебник

Издательство: Просвещение

Год издания: 2019 - 2022

Цвет обложки: белый, бирюзовый, оранжевый

Допущено Министерством просвещения Российской Федерации

Глава 1. Алгебраические дроби. Дополнительные задания - номер 216, страница 57.

App\Models\Task {#1030 // resources/views/models/task/default.blade.php
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    "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037
      #items: array:1 [
        0 => App\Models\Term {#1036
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        0 => App\Models\Branch {#1045
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                0 => App\Models\Term {#1047
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                0 => App\Models\Book {#1049
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                    "field_class" => Illuminate\Database\Eloquent\Collection {#1052
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                        0 => App\Models\Term {#1053
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1054
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                    "field_author" => Illuminate\Database\Eloquent\Collection {#1056
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                        1 => App\Models\Term {#1058
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                        5 => App\Models\Term {#1062
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                    "field_description_bottom" => "<!--Текст в низу страницы--> <h2> Почему ученикам нужен решебник? </h2> <p> Многое из того, что изучается в школе, в дальнейшем не пригодится. Так, по крайней мере думают подростки. Однако на практике все получается совершенно по-другому. Поэтому как бы сложен не был предмет (например, алгебра), его необходимо как следует изучить. Чтобы процесс восприятия материала проходил легко и без заминок, следует использовать «<strong>ГДЗ по Алгебре 8 класс Учебник Дорофеев, Суворова, Бунимович, Кузнецова, Минаева, Рослова (Просвещение)</strong>». </p> <p> В справочнике нашли отражение следующие темы: <ol> <li>Алгебраическая дробь, ее свойства, действия с ней.</li> <li>Как преобразовать степень?</li> <li>Теорема Пифагора.</li> <li>График зависимости y=√х.</li> <li>Квадратный и кубический корни.</li> <li>Двойные радикалы, и т.д.</li> </ol> <p> В восьмом классе по предмету проходят спаренные уроки, что с одной стороны должно помочь учителю более подробно объяснить каждую тему. Но на деле и этого времени все равно не хватает, так как программа стала еще обширнее. В итоге, как и раньше, ребятам придется многое разбирать самостоятельно и закреплять полученные в классе навыки практическим путем, но уже дома. Такая задача весьма сложна не только для сильно отстающих учеников, но и для отличников, так что дополнительная помощь никогда не помешает. В этом случае на выручку всегда может прийти решебник. </p> <h2> Делать д/з лучше с ГДЗ к учебнику Дорофеева </h2> <p> Количество домашних заданий в этом году значительно возрастает, так что порой ребята проводят над тетрадями не один час. Но даже это не гарантирует, что все упражнения будут сделаны правильно. Поэтому необходимо сразу же проверять написанное, чтобы не схлопотать плохую оценку. Так как самостоятельно подростки такого мониторинга не проводят, то им поможет в этом <strong>сборник ответов по алгебре 8 класс к учебнику Дорофеева</strong>. </p> <p> Благодаря изданию учащиеся смогут: <ol> <li>улучшить качество письменных работ;</li> <li>избавиться от любых недочетов;</li> <li>приобрести хорошую успеваемость;</li> <li>устранять трудности по мере их возникновения.</li> </ol> <p> Систематически занимаясь с решебником, восьмиклассники научатся не только разбираться в самых непростых темах, но и будут активно применять свои навыки на практике. Это позволит им выбиться в отличники и успешно справляться со всеми поставленными учителем задачами. Кроме того, они могут не переживать о результатах многочисленных проверочных работ, так как будут знать весь материал «на зубок». </p> <h2> Как часто можно использовать онлайн-справочник? </h2> <p> В скором времени учащимся предстоит сдавать первые экзамены, после чего многие из них навсегда покинут школьные стены. Из-за этого на первое место встают успеваемость и качество полученных знаний. Родители стараются всячески помочь детям преодолеть все трудности и нередко записывают их к репетитору. Но намного действеннее могут оказаться занятия с <strong>гдз по алгебре за 8 класс Учебник Дорофеев</strong>. </p> <p> Сборник позволит ученикам: <ul> <li>самостоятельно разобрать все проблемные моменты;</li> <li>дополнительно потренироваться перед контрольными;</li> <li>работать в удобном для себя темпе;</li> <li>не зависеть от помощи взрослых.</li> </ul> <p> Опытные методисты, которые составили решебник, предоставили много полезной информации, благодаря чему никакие дополнительные действия для освоения дисциплины не понадобятся. Но, конечно, если подростки хотят добиться хороших результатов, им стоит забыть о списывании. Необходимо тщательно изучать все сведения, проводить анализ задач и уравнений, чтобы понять принцип их выполнения. Освоив это, восьмиклассники не будут испытывать затруднений при переходе к более сложному материалу. </p>"
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                    "field_description_bottom" => "<!--Текст в низу страницы--> <h2> Почему ученикам нужен решебник? </h2> <p> Многое из того, что изучается в школе, в дальнейшем не пригодится. Так, по крайней мере думают подростки. Однако на практике все получается совершенно по-другому. Поэтому как бы сложен не был предмет (например, алгебра), его необходимо как следует изучить. Чтобы процесс восприятия материала проходил легко и без заминок, следует использовать «<strong>ГДЗ по Алгебре 8 класс Учебник Дорофеев, Суворова, Бунимович, Кузнецова, Минаева, Рослова (Просвещение)</strong>». </p> <p> В справочнике нашли отражение следующие темы: <ol> <li>Алгебраическая дробь, ее свойства, действия с ней.</li> <li>Как преобразовать степень?</li> <li>Теорема Пифагора.</li> <li>График зависимости y=√х.</li> <li>Квадратный и кубический корни.</li> <li>Двойные радикалы, и т.д.</li> </ol> <p> В восьмом классе по предмету проходят спаренные уроки, что с одной стороны должно помочь учителю более подробно объяснить каждую тему. Но на деле и этого времени все равно не хватает, так как программа стала еще обширнее. В итоге, как и раньше, ребятам придется многое разбирать самостоятельно и закреплять полученные в классе навыки практическим путем, но уже дома. Такая задача весьма сложна не только для сильно отстающих учеников, но и для отличников, так что дополнительная помощь никогда не помешает. В этом случае на выручку всегда может прийти решебник. </p> <h2> Делать д/з лучше с ГДЗ к учебнику Дорофеева </h2> <p> Количество домашних заданий в этом году значительно возрастает, так что порой ребята проводят над тетрадями не один час. Но даже это не гарантирует, что все упражнения будут сделаны правильно. Поэтому необходимо сразу же проверять написанное, чтобы не схлопотать плохую оценку. Так как самостоятельно подростки такого мониторинга не проводят, то им поможет в этом <strong>сборник ответов по алгебре 8 класс к учебнику Дорофеева</strong>. </p> <p> Благодаря изданию учащиеся смогут: <ol> <li>улучшить качество письменных работ;</li> <li>избавиться от любых недочетов;</li> <li>приобрести хорошую успеваемость;</li> <li>устранять трудности по мере их возникновения.</li> </ol> <p> Систематически занимаясь с решебником, восьмиклассники научатся не только разбираться в самых непростых темах, но и будут активно применять свои навыки на практике. Это позволит им выбиться в отличники и успешно справляться со всеми поставленными учителем задачами. Кроме того, они могут не переживать о результатах многочисленных проверочных работ, так как будут знать весь материал «на зубок». </p> <h2> Как часто можно использовать онлайн-справочник? </h2> <p> В скором времени учащимся предстоит сдавать первые экзамены, после чего многие из них навсегда покинут школьные стены. Из-за этого на первое место встают успеваемость и качество полученных знаний. Родители стараются всячески помочь детям преодолеть все трудности и нередко записывают их к репетитору. Но намного действеннее могут оказаться занятия с <strong>гдз по алгебре за 8 класс Учебник Дорофеев</strong>. </p> <p> Сборник позволит ученикам: <ul> <li>самостоятельно разобрать все проблемные моменты;</li> <li>дополнительно потренироваться перед контрольными;</li> <li>работать в удобном для себя темпе;</li> <li>не зависеть от помощи взрослых.</li> </ul> <p> Опытные методисты, которые составили решебник, предоставили много полезной информации, благодаря чему никакие дополнительные действия для освоения дисциплины не понадобятся. Но, конечно, если подростки хотят добиться хороших результатов, им стоит забыть о списывании. Необходимо тщательно изучать все сведения, проводить анализ задач и уравнений, чтобы понять принцип их выполнения. Освоив это, восьмиклассники не будут испытывать затруднений при переходе к более сложному материалу. </p>"
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            "text" => "<p><strong>а)</strong></p><p>Дано выражение: $\frac{2x^{-12}y^{12}}{5} \cdot \frac{10x^{13}}{y^{-12}}$</p><p>Для решения этого примера, перемножим числители и знаменатели дробей:</p><p>$\frac{2x^{-12}y^{12} \cdot 10x^{13}}{5 \cdot y^{-12}}$</p><p>Теперь сгруппируем коэффициенты и переменные с одинаковыми основаниями и выполним действия с ними. При умножении степеней с одинаковым основанием их показатели складываются ($a^n \cdot a^m = a^{n+m}$), а при делении — вычитаются ($\frac{a^n}{a^m} = a^{n-m}$).</p><p>$\frac{2 \cdot 10}{5} \cdot x^{-12}x^{13} \cdot \frac{y^{12}}{y^{-12}} = 4 \cdot x^{-12+13} \cdot y^{12-(-12)} = 4 \cdot x^{1} \cdot y^{12+12} = 4xy^{24}$</p><p>Ответ: $4xy^{24}$</p><p><strong>б)</strong></p><p>Дано выражение: $\frac{12m^6}{n^{-6}} \cdot \frac{3m^{-3}n^{-5}}{4}$</p><p>Перемножим числители и знаменатели дробей:</p><p>$\frac{12m^6 \cdot 3m^{-3}n^{-5}}{n^{-6} \cdot 4}$</p><p>Сгруппируем коэффициенты и переменные с одинаковыми основаниями и упростим:</p><p>$\frac{12 \cdot 3}{4} \cdot m^6m^{-3} \cdot \frac{n^{-5}}{n^{-6}} = 9 \cdot m^{6+(-3)} \cdot n^{-5-(-6)} = 9 \cdot m^3 \cdot n^{-5+6} = 9m^3n$</p><p>Ответ: $9m^3n$</p><p><strong>в)</strong></p><p>Дано выражение: $\frac{11a^{-4}}{b^4} \cdot \frac{b^{12}}{22a^8}$</p><p>Перемножим числители и знаменатели и сгруппируем члены с одинаковыми основаниями:</p><p>$\frac{11a^{-4}b^{12}}{22a^8b^4} = \frac{11}{22} \cdot \frac{a^{-4}}{a^8} \cdot \frac{b^{12}}{b^4}$</p><p>Теперь упростим каждую группу. Для отрицательной степени используем правило $a^{-n} = \frac{1}{a^n}$.</p><p>Коэффициенты: $\frac{11}{22} = \frac{1}{2}$.</p><p>Переменная $a$: $\frac{a^{-4}}{a^8} = a^{-4-8} = a^{-12} = \frac{1}{a^{12}}$.</p><p>Переменная $b$: $\frac{b^{12}}{b^4} = b^{12-4} = b^8$.</p><p>Собираем упрощенное выражение:</p><p>$\frac{1}{2} \cdot \frac{1}{a^{12}} \cdot b^8 = \frac{b^8}{2a^{12}}$</p><p>Ответ: $\frac{b^8}{2a^{12}}$</p><p><strong>г)</strong></p><p>Дано выражение: $\frac{8p^{-8}}{q^{-10}} \cdot \frac{q^{-8}}{16q^{-9}}$</p><p>Перемножим дроби, умножая числители и знаменатели:</p><p>$\frac{8p^{-8} \cdot q^{-8}}{q^{-10} \cdot 16q^{-9}}$</p><p>Упростим знаменатель, сложив степени $q$:</p><p>$\frac{8p^{-8}q^{-8}}{16q^{-10+(-9)}} = \frac{8p^{-8}q^{-8}}{16q^{-19}}$</p><p>Теперь сгруппируем и упростим выражение, разделив коэффициенты и переменные:</p><p>$\frac{8}{16} \cdot p^{-8} \cdot \frac{q^{-8}}{q^{-19}} = \frac{1}{2} \cdot p^{-8} \cdot q^{-8-(-19)} = \frac{1}{2} \cdot p^{-8} \cdot q^{11} = \frac{q^{11}}{2p^8}$</p><p>Ответ: $\frac{q^{11}}{2p^8}$</p>"
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            "text" => "<p><strong>а)</strong></p><p>Дано выражение: $\frac{2x^{-12}y^{12}}{5} \cdot \frac{10x^{13}}{y^{-12}}$</p><p>Для решения этого примера, перемножим числители и знаменатели дробей:</p><p>$\frac{2x^{-12}y^{12} \cdot 10x^{13}}{5 \cdot y^{-12}}$</p><p>Теперь сгруппируем коэффициенты и переменные с одинаковыми основаниями и выполним действия с ними. При умножении степеней с одинаковым основанием их показатели складываются ($a^n \cdot a^m = a^{n+m}$), а при делении — вычитаются ($\frac{a^n}{a^m} = a^{n-m}$).</p><p>$\frac{2 \cdot 10}{5} \cdot x^{-12}x^{13} \cdot \frac{y^{12}}{y^{-12}} = 4 \cdot x^{-12+13} \cdot y^{12-(-12)} = 4 \cdot x^{1} \cdot y^{12+12} = 4xy^{24}$</p><p>Ответ: $4xy^{24}$</p><p><strong>б)</strong></p><p>Дано выражение: $\frac{12m^6}{n^{-6}} \cdot \frac{3m^{-3}n^{-5}}{4}$</p><p>Перемножим числители и знаменатели дробей:</p><p>$\frac{12m^6 \cdot 3m^{-3}n^{-5}}{n^{-6} \cdot 4}$</p><p>Сгруппируем коэффициенты и переменные с одинаковыми основаниями и упростим:</p><p>$\frac{12 \cdot 3}{4} \cdot m^6m^{-3} \cdot \frac{n^{-5}}{n^{-6}} = 9 \cdot m^{6+(-3)} \cdot n^{-5-(-6)} = 9 \cdot m^3 \cdot n^{-5+6} = 9m^3n$</p><p>Ответ: $9m^3n$</p><p><strong>в)</strong></p><p>Дано выражение: $\frac{11a^{-4}}{b^4} \cdot \frac{b^{12}}{22a^8}$</p><p>Перемножим числители и знаменатели и сгруппируем члены с одинаковыми основаниями:</p><p>$\frac{11a^{-4}b^{12}}{22a^8b^4} = \frac{11}{22} \cdot \frac{a^{-4}}{a^8} \cdot \frac{b^{12}}{b^4}$</p><p>Теперь упростим каждую группу. Для отрицательной степени используем правило $a^{-n} = \frac{1}{a^n}$.</p><p>Коэффициенты: $\frac{11}{22} = \frac{1}{2}$.</p><p>Переменная $a$: $\frac{a^{-4}}{a^8} = a^{-4-8} = a^{-12} = \frac{1}{a^{12}}$.</p><p>Переменная $b$: $\frac{b^{12}}{b^4} = b^{12-4} = b^8$.</p><p>Собираем упрощенное выражение:</p><p>$\frac{1}{2} \cdot \frac{1}{a^{12}} \cdot b^8 = \frac{b^8}{2a^{12}}$</p><p>Ответ: $\frac{b^8}{2a^{12}}$</p><p><strong>г)</strong></p><p>Дано выражение: $\frac{8p^{-8}}{q^{-10}} \cdot \frac{q^{-8}}{16q^{-9}}$</p><p>Перемножим дроби, умножая числители и знаменатели:</p><p>$\frac{8p^{-8} \cdot q^{-8}}{q^{-10} \cdot 16q^{-9}}$</p><p>Упростим знаменатель, сложив степени $q$:</p><p>$\frac{8p^{-8}q^{-8}}{16q^{-10+(-9)}} = \frac{8p^{-8}q^{-8}}{16q^{-19}}$</p><p>Теперь сгруппируем и упростим выражение, разделив коэффициенты и переменные:</p><p>$\frac{8}{16} \cdot p^{-8} \cdot \frac{q^{-8}}{q^{-19}} = \frac{1}{2} \cdot p^{-8} \cdot q^{-8-(-19)} = \frac{1}{2} \cdot p^{-8} \cdot q^{11} = \frac{q^{11}}{2p^8}$</p><p>Ответ: $\frac{q^{11}}{2p^8}$</p>"
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№216 (с. 57)
Условие. №216 (с. 57)
скриншот условия
Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета, страница 57, номер 216, Условие

216 а) $ \frac{2x^{-12}y^{12}}{5} \cdot \frac{10x^{13}}{y^{-12}} $

б) $ \frac{12m^{6}}{n^{-6}} \cdot \frac{3m^{-3}n^{-5}}{4} $

В) $ \frac{11a^{-4}}{b^{4}} \cdot \frac{b^{12}}{22a^{8}} $

Г) $ \frac{8p^{-8}}{q^{-10}} \cdot \frac{q^{-8}}{16q^{-9}} $

Решение 1. №216 (с. 57)
Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета, страница 57, номер 216, Решение 1
Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета, страница 57, номер 216, Решение 1 (продолжение 2)
Решение 2. №216 (с. 57)
Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета, страница 57, номер 216, Решение 2
Решение 3. №216 (с. 57)
Алгебра, 8 класс Учебник, авторы: Дорофеев Георгий Владимирович, Суворова Светлана Борисовна, Бунимович Евгений Абрамович, Кузнецова Людмила Викторовна, Минаева Светлана Станиславовна, Рослова Лариса Олеговна, издательство Просвещение, Москва, 2019 - 2022, белого цвета, страница 57, номер 216, Решение 3
Решение 4. №216 (с. 57)

а)

Дано выражение: $\frac{2x^{-12}y^{12}}{5} \cdot \frac{10x^{13}}{y^{-12}}$

Для решения этого примера, перемножим числители и знаменатели дробей:

$\frac{2x^{-12}y^{12} \cdot 10x^{13}}{5 \cdot y^{-12}}$

Теперь сгруппируем коэффициенты и переменные с одинаковыми основаниями и выполним действия с ними. При умножении степеней с одинаковым основанием их показатели складываются ($a^n \cdot a^m = a^{n+m}$), а при делении — вычитаются ($\frac{a^n}{a^m} = a^{n-m}$).

$\frac{2 \cdot 10}{5} \cdot x^{-12}x^{13} \cdot \frac{y^{12}}{y^{-12}} = 4 \cdot x^{-12+13} \cdot y^{12-(-12)} = 4 \cdot x^{1} \cdot y^{12+12} = 4xy^{24}$

Ответ: $4xy^{24}$

б)

Дано выражение: $\frac{12m^6}{n^{-6}} \cdot \frac{3m^{-3}n^{-5}}{4}$

Перемножим числители и знаменатели дробей:

$\frac{12m^6 \cdot 3m^{-3}n^{-5}}{n^{-6} \cdot 4}$

Сгруппируем коэффициенты и переменные с одинаковыми основаниями и упростим:

$\frac{12 \cdot 3}{4} \cdot m^6m^{-3} \cdot \frac{n^{-5}}{n^{-6}} = 9 \cdot m^{6+(-3)} \cdot n^{-5-(-6)} = 9 \cdot m^3 \cdot n^{-5+6} = 9m^3n$

Ответ: $9m^3n$

в)

Дано выражение: $\frac{11a^{-4}}{b^4} \cdot \frac{b^{12}}{22a^8}$

Перемножим числители и знаменатели и сгруппируем члены с одинаковыми основаниями:

$\frac{11a^{-4}b^{12}}{22a^8b^4} = \frac{11}{22} \cdot \frac{a^{-4}}{a^8} \cdot \frac{b^{12}}{b^4}$

Теперь упростим каждую группу. Для отрицательной степени используем правило $a^{-n} = \frac{1}{a^n}$.

Коэффициенты: $\frac{11}{22} = \frac{1}{2}$.

Переменная $a$: $\frac{a^{-4}}{a^8} = a^{-4-8} = a^{-12} = \frac{1}{a^{12}}$.

Переменная $b$: $\frac{b^{12}}{b^4} = b^{12-4} = b^8$.

Собираем упрощенное выражение:

$\frac{1}{2} \cdot \frac{1}{a^{12}} \cdot b^8 = \frac{b^8}{2a^{12}}$

Ответ: $\frac{b^8}{2a^{12}}$

г)

Дано выражение: $\frac{8p^{-8}}{q^{-10}} \cdot \frac{q^{-8}}{16q^{-9}}$

Перемножим дроби, умножая числители и знаменатели:

$\frac{8p^{-8} \cdot q^{-8}}{q^{-10} \cdot 16q^{-9}}$

Упростим знаменатель, сложив степени $q$:

$\frac{8p^{-8}q^{-8}}{16q^{-10+(-9)}} = \frac{8p^{-8}q^{-8}}{16q^{-19}}$

Теперь сгруппируем и упростим выражение, разделив коэффициенты и переменные:

$\frac{8}{16} \cdot p^{-8} \cdot \frac{q^{-8}}{q^{-19}} = \frac{1}{2} \cdot p^{-8} \cdot q^{-8-(-19)} = \frac{1}{2} \cdot p^{-8} \cdot q^{11} = \frac{q^{11}}{2p^8}$

Ответ: $\frac{q^{11}}{2p^8}$

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