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Cel mai inteligent răspuns!
2014-10-06T14:56:00+03:00
S=2+2²+2³+...+2²⁰⁰⁴                   *inmultim cu 2
2*S=2*2+2*2²+2*2³+...+2*2²⁰⁰⁴ =>
2S=2²+2³+2⁴+...+2²⁰⁰⁵= 2-2+2²+2³+2⁴+...+2²⁰⁰⁵ = S +2²⁰⁰⁵-2
2S-S=2²⁰⁰⁵-2
S=2²⁰⁰⁵-2



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