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(√2-1)la patrat +√8-6√3+(3+√3)la patrat -(√15-2)la patrat -2√60

Răspuns :

(√2-1)²+√8-6√3+(3+√3)²-(√15-2)²-2√60=
2-2√2+1+2√2-6√3+9+6√3-15+4√15-4-2*2√15=
-7+4√15-4√15=-7