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(2-radical3 )la puterea a 2
ajutatima urgent
vriau raspunsle lung


Răspuns :

[tex] (2- \sqrt{3}) ^{2}=2^2-2*2* \sqrt{3}+ (\sqrt{3})^2=4-4 \sqrt{3}+3=7-4 \sqrt{3} [/tex]