July 2022 1 1 Report
Даю 40 баллов! Помогите!!!
Пусть А=х^2-2xy+y^2,B=2x^2-y^2,C=x^2-3xy.Упростите выражение:
А)А+В-С
Б)А-В+С
В)-А+В-С
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