merasionalkan 6/√6+2

6 / √6 + 2
= 6 / √6 + 2 × √6 - 2 / √6 - 2
= 6√6 - 12 / √36 - 2√6 + 2√6 - 4
= 6√6 - 12 / 6 - 4
= 6√6 - 12 / 2
= 6/2 √6 - 12/2
= 3√6 - 6

Semoga bisa membantu...

smg membantu
maaf jika salah:)