7. Efectuați:(-1)+2×(-1)²+ ... +2019×(-1)²⁰¹⁹=Cu explicație!.... Idea question from @Paris987

Paris987 @Paris987

August 2021 0 40 Report

7. Efectuați:
(-1)+2×(-1)²+ ... +2019×(-1)²⁰¹⁹=
Cu explicație!

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