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[tex] \frac{ \sqrt{2} }{2} + \frac{ \sqrt{2} }{2} =???????????????? [/tex]

Răspuns :

[tex] \frac{ \sqrt{2} }{2} + \frac{ \sqrt{2} }{2} = \frac{ \sqrt{4} }{4} + \frac{ \sqrt{4} }{4} = \frac{2}{4} + \frac{2}{4} = \frac{4}{4} =1.[/tex]