Предмет: Алгебра, автор: ilyas041200

196x²–(14x+3)²+80x=–5

Ответы

Автор ответа: CharaDemon

Ответ:

x = -1

Объяснение:

Раскладываем выражение

196x²–(196x²+84x+9)+80x=–5

Раскрываем скобки

196x²–196x²-84x-9+80x=–5

Сокращаем противоположные выражения, приводим подобные члены

-4x-9=-5

Вычисляем

-4x=-5+9

-4x=4

⇒ x = -1

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