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2014-08-19T18:30:05+03:00
(3+2√5)² = 9 + 12√5+ 20 = 29+12√5 . 

(5-2√2)² = 25-20√5+8 = 33-20√5.

(2√3+1)² = 12+4√3+ 1 = 13+4√3 . 

(4√5-3)² = 80- 24√5+ 9 = 89-24√5 

(2√2+ 3√5)² = 8+ 12√10+ 45 = 63+12√10.
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