Предмет: Алгебра, автор: girlokay

пожалуйста, помогите решить

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Автор ответа: dim10102806

4(a+1)/(a^3-8)+a/(a^2+2a+4)+1/(2-a)=4(a+1)/((a-2)(a^2+2a+4))+a(a^2+2a+4)-1/(a-2)=(4a+4+a^2-2a-a^2-2a-4)/((a-2)(a^2+2a+4))=0, что и требовалось доказать
Ответ: доказано

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