√6 + 2 √6 - 2 ---------- - ---------- √6 - 2 √6 + 2
√6 + 2 √6 - 2 (√6 +2 )² - (√6 + 2)² 6+4√6+4-6+4√6-4 ---------- - ---------- = ----------------------------------- = ------------------------------ = √6 - 2 √6 + 2 (√6 - 2)* (√6 + 2) 6-4 8√6 = ---------- = 4√6 2