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(radical din 2 + radical din3) totul la patrat

Răspuns :

[tex]( \sqrt{2}+ \sqrt{3})^2=( \sqrt{2})^2+ (\sqrt{3})^2+2* \sqrt{2}* \sqrt{3} \\ ~~~~~~~~~~~~~~~~=2+3+2 \sqrt{6} =5+2 \sqrt{6} [/tex]