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

来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/05 13:58:50
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

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