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(3-√6)(3+√6)+(√3-1)(√3+1)-(3-√5)(3+√5)


Răspuns :

(3-√6)(3+√6)=9-6=3
(√3-1)(√3+1)=3-1=2
(3-√5)(3+√5)=9-5=4
si acum inlocuim
3+2-4=1