Предмет: Алгебра, автор: Инкогнито0

Помогите решить.Прям срочняк

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Автор ответа: Лена2219

3^n-(n-2)* 0.2^2(n-2)-(2n-3)=
=3^n-n+2*0.2^2n-4-2n+3=
=3^2*0.2^-1=
=9*5=
=45
(0.2 это 1/5, а 1/5 в степени -1 это 5)

Автор ответа: dbookerkst

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Автор ответа: Лена2219

У меня проще :)

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