12 / (√6 - √2) = ( rationalizam cu (√6 + √2) )
12 × (√6 + √2) / (√6 -√2)(√6 + √2) =
12× (√6 + √2) / (6 - 2) =
12 × (√6 + √2) / 4 =
3 × (√6 + √2) =
3√6 + 3√2
