Предмет: Математика, автор: Аноним

Помогитее пожалуйста!!!
Сделаю лучший ответ кто правильно сделает
Пожалуйста у меня 5 ошибок в онлайн мектеп, у меня будет 4 балла если я этот 9 задание не сделаю.​

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Ответы

Автор ответа: Аноним
1

Ответ: верные ответы четвертый и пятый. т.е. a>0,  b< 0;  a<0, b>0.

Пошаговое объяснение:

4. a>0, b< 0, пример, а = 5, b=-3; тогда слева II5I-I-3II=2, справа

I5-(-3)I=8, неравенство справедливо.

5. a<0, b>0; а=-3; b=5, тогда слева II-3I-I5II=2, справа

I-3-5I=8, неравенство справедливо.

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