Предмет: Математика, автор: c2947907

ДАЮ 100 БАЛЛОЛ
Х*(Х^2-25)=Х*(Х-5)*(Х+5) разложение на множители
Почему тут x-5 и x+5

Ответы

Автор ответа: ksundeldorohtiy
1

Відповідь:

Покрокове пояснення:

Приложения:
Автор ответа: iramazurk
0

Пошаговое объяснение:

х² - 25 = х² - 5²

Используя формулу: а² - в² = (а - в)*(а + в),

разложим на множители выражение:

х² - 5² = (х - 5)*(х+5)

Поэтому:

х*(х² - 25) = х(х - 5)*(х + 5)

х³ - 25х = х³ - 25х

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Задание 1. Укажите предложения, которые не соответствуют содержанию текста
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3. Often I lost the game or a competition and suffered greatly.
4. Every five years the sportsmen from all over the world gather together to compete and glorify their Motherland.
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