Предмет: Алгебра, автор: anelka0403

Найдите допустимые значения переменной выражения a^3-9a/a^2+2a-3 и определите,при каких значениях переменной данная рациональная дробь равна 0

Ответы

Автор ответа: nastyainet

ОДЗ : 1 и -3
a^3-9a/a^2+2a-3 = 0
a^3-9a = 0
a = 0, +3, -3
т.е. а = 0; 3

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