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(√2+1) totul la a 2 a +2√8


Răspuns :

(√2+1)² +2√8=
=
2+2√2+1 +4√2=
=3+6√2=
=3(1+√2)
(√2+1)²+2√8=
2+2*√2*1+1+2*2√2=
3+2√2+4√2=6√2+3