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calculati (2√5-√2)²+(2+√10)²+(3√3-5)(3√3+5)

Răspuns :

 (2√5-√2)²+(2+√10)²+(3√3-5)(3√3+5) = 38

= 4 
× 5 - 4√ 10 +2 + 4 + 4√ 10 + 10 + 9× 3 - 25 = 

= 20 + 6 + 10 + 27 - 25 = 

= 38