Jawabanmu

2014-09-01T18:46:30+07:00
1) a² - 2ab + b²
2) 6√6 - 4√21 + 12√10 - 8√35
3) 5 + 3 = 8

maaf kalo slah
2014-09-01T19:07:55+07:00
1. (a-b)² = a² - 2ab + b²
2. (2√3+4√5)(3√2-2√7) = 6√6 - 4√21 + 12√10 - 8√35
3. (√5+√3)² = 5 + 2√15 +3