怎么化简:(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))(a+b)

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怎么化简:(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))(a+b)

怎么化简:(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))(a+b)
怎么化简:(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))(a+b)

怎么化简:(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))(a+b)
={(a^(1/2)+b^(1/2))(a^(1/2)-b^(-1/2))}(a+b)
={(a-b)}(a+b)
=a^2-b^2