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(3+√2)total la a 2 as Doris si EU rezolvarea

Răspuns :

[tex](3 + \sqrt{2})*(3 + \sqrt{2}) = 3 * 3 + 3 * \sqrt{2} + \sqrt{2} * 3 + \sqrt{2} * \sqrt{2} = \\ 9 + 6 * \sqrt{2} + 2 = 11 + 6 * \sqrt{2}[/tex]