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thanos Thanos was a genocidal warlord from Titan, whose objective was to bring stability to the universe by wiping out half of all life at every level, as he believed its massive population would inevitably use up the universe's entire supply of resources and perish. To complete this goal, Thanos set
cho số phức z=a+bi Cho số phức z có phần thực là số nguyên và z thỏa mãn |z|−2z¯=−7+3i+z. Môđun của số phức w=1−z+z^2 bằng