Предмет: Алгебра, автор: nail579

Найдите значение выражения a/5c - a^2+25c^2/5ac + 5c-a/a , при a =89, c = 34

twilight16: вы правильно написали в конце - a/a

nail579: что вы так долго пишете

Ответы

Автор ответа: hote

15

а/5с-(а^2+25с^2)/5ас+(5с-а)/а Общий знаменатель 5 ас (а^2-а^2-25с^2+25с^2-5ас)/5ас=-5ас/5ас=-1 при любых а и с

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