Предмет: Алгебра, автор: seniorkuzminpavel

Какую дробь надо сложить с дробью 1/а+2, чтобы получить а²/а³+8

Ответы

Автор ответа: wieslawlozickip5w1nd

Ответ:

Объяснение:

надо сложить с дробь (2а-4) / (а³-8) с дробью 1/а+2

Надо от (а² / (а³ +8) отнимат 1 / (а+ 2) и получим (2а-4) / (а³-8)

a²/(a³+8) – 1/(a+2)=(a²-(a²-2a+4)/(a³+8)=(a²-a²+2a-4)/(a³+8)=(2a-4)/(a³+8)

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