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10 p si COROANA!! F SIMPLU!!!
Poza atasata….


10 P Si COROANA F SIMPLU Poza Atasata class=

Răspuns :

Răspuns:

[tex]n = 2019 + 2(1 + 2 + 3 + ... + 2018) \\ n = 2019 + 2 \times \frac{2018 \times 2019}{2} \\ n = 2019 + 2018 \times 2019 \\ n = 2019(1 + 2018) \\ n = 2019 \times 2019 \\ n = {2019}^{2} = > patrat \: perfect[/tex]