Сократите дробь (а-3а^(1/2))/(а+3а(1/2))

Question

Сократите дробь (а-3а^(1/2))/(а+3а(1/2))

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Answer 1

Сократите дробь


 (а-3а^(1/2))/(а+3а^(1/2))=

=[а^(1/2)(а^(1/2)-3)]/[(а^(1/2))(а^(1/2)+3)]=

=(а^(1/2)-3)/(а^(1/2)+3)

Answer 2

А + 3а½(-1) / а + 3а½(1) = -1/1 = -1