Rasionalkan 4/√7+ √2 Plisssss butuh sangad

Mapel : Matematika
Bab : Akar dan Pangkat

[tex] \frac{4}{ \sqrt{7} + \sqrt{2} } \\ = \frac{4}{ \sqrt{7} + \sqrt{2} } \times \frac{ \sqrt{7} - \sqrt{2} }{ \sqrt{7} - \sqrt{2} } \\ = \frac{4( \sqrt{7} - \sqrt {2}) }{7 - 2} \\ = \frac{4( \sqrt{7} - \sqrt{2}) }{5} \\ = \frac{4}{5} ( \sqrt{7} - \sqrt{2} )[/tex]

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