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calculati:1/1•2+3/2•5+5/5•10+7/10•17+9/17•26+11/26•37+13/37•50 va rooooog frumos

Răspuns :

Mariasanduleac
1/1•2+3/2•5+5/5•10+7/10•17+9/17•26+11/26•37+13/37•50=2/1+15/2+50/10+114/10+234/17+407/26+650/37=2+7,5+5+11,4+12,76+15,65+17,56=71,87

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