Предмет: Алгебра, автор: сантл

помогите мне пожалуйста я Вас прошу

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Автор ответа: ann1885
0
10.
знаменатель = 1/х +1/х²+1/х³ = (х²+х+1)/х³
дробь
= х(1+х+х²) : (х²+х+1)/х³ = х(1+х+х²) * х³/(1+х+х²) = х^4
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