Jawabanmu

2014-09-03T19:24:23+07:00
A = 3 + √6 || a² = (3 + √6)² = 9 + 6√6 + 6
b = 3 - √6 || b² = (3 + √6)² = 9 - 6√6 + 6
6ab = 6 * (3 + √6) * (3 - √6) = 6(9 - 6) = 6 * 3 = 18

a² + b² - 6ab = (9 + 6√6 + 6) + (9 - 6√6 + 6) - 18 = 18 + 12 - 18 = 12