Nr naturale – 2 puterea 0 plus 2 la puterea 1 plus 2 la puterea 2

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Published on Nov 11, 2014 by autor

Clasa a V-a – Cap. Nr naturale – ex 14 – 2 puterea 0 plus 2 la puterea 1 plus 2 la puterea 2

Fie numerele a şi b.

a=2 ^{0}+2 ^{1}+2 ^{2}+...+2 ^{100}+2 ^{101}

b=3(4 ^{0}+4 ^{1}+4 ^{2}+...+4 ^{50})

Arătaţi că a = b.

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