ОГЭ 2017 по Математике Сумма квадратов Задание 21 #5
Решения Задания 21 (Алгебра) из ОГЭ 2017 по математике
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![[ОнлайнХимик • ЕГЭ ОГЭ ХИМИЯ 2025 • Ирина Корешкова] K2S + KMnO4 + H2O → S + MnO2 + KOH Окислительно-восстановительная реакция П](https://sun9-12.userapi.com/impg/e8Ih8eAPODpQZULoCGM5xfMfJUnSuCwZrVyTGg/r1YDMJMeeic.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=42dcce1eb0f759509b03abd625d282ec&c_uniq_tag=tl9rzCSU2kzDOWnpAgAnzimrFNOJoE3K2ZqRnV_KWZQ&type=video_thumb)
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