初中数学基础题，分母有理化，根3的倒数
Synopsis
初中数学基础题，分母有理化，根3的倒数.
![2-2-11分母有理化 [ 進階必考 ]](https://i.ytimg.com/vi/eWLrG8-6gnQ/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDLP0E-QQf4Xh7KXnsVqZYaCmN4Nw)
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