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se considera nr.: n= 100×99-99×98+98×97-97×96+...+4×3-3.2+2×1.Aratati ca 2n este patrat perfect

Răspuns :

:#8@9!;!7@^##8"8 9"9&": !!0!*@&8${data-answer}amp;" 8"8#&;#,@@0!0@*@X" &:"&'*0##*#;#;*#@99!!0@9#8'"7: :*'9#@98@&'&'; gata