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exericitiul 15
urgent!!!!


Exericitiul 15 Urgent class=

Răspuns :

calculam intai suma 1 + 2 + 3 + . . . + 50 = 50 (50 + 1)/2 = 50 x 51 : 2 = 1275
calculam suma numitorului 1 + 2 + 3 + . . . + 51 = 51 (51 + 1)/2 = 51 x 52 : 2 = 1326
si obtinem √1275/1326 = √50/52 = √25/26= 5/√26