Предмет: Алгебра, автор: leodemon74

x^2+14x-51=(x 17)(x-3)

Помогите доказать тождество!

Пожалуйста, всё по порядку и с пояснением.

Я пропустил эту тему. Спасибо огромное!

Ответы

Автор ответа: К1сения

Если в правой части стоит в скобке (х +17) то такое тождество: x^2+14x-51 выносишь на запасное поле и решаешь его как квадратное уравнение! 1) Д=196+4*51=196+200=400 ; х=3 , х=17... потом решаем то что с права 2) раскрываем скобки и приводим подобное и получается х^2-3x +17X-51 = x^2+14x-51

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