Предмет: Алгебра, автор: Anyamore1750

Помогите !) Срочно!!!)))
Сократите дробь
а2-14а+49/а2-49 при а= -14

Ответы

Автор ответа: NochnayaArhideya
7
____________________________
Приложения:
Автор ответа: UndeadMoose
2
в обеих частях дроби-формула сокр.умножения
тогда (а-7)^2\(a-7)(a+7)
сокращаем
(a-7)\(a+7)
подставляем:
-21\-7=3
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