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Daca
E(x)=2[tex] x^{3} [/tex] - 3[tex] x^{2} [/tex] - 3x + 6
E([tex] \sqrt{2} [/tex])


Răspuns :

[tex]E( \sqrt{2} )=2* (\sqrt{2})^3-3* (\sqrt{2})^2-3 \sqrt{2}+6=4 \sqrt{2}-6-3\sqrt{2}+6 = \sqrt{2} [/tex]