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Автор - bogdik53

714 б
Даю 25 баллов
Благодарю заранее

Ответ

Проверено экспертом

Автор - Evgenia4836

x²y-y+xy²-x= xy(x+y)-(x+y)= (x+y)*(xy-1)

(4+0,25)*(4*0,25-1)= 4,25*(1-1)= 0

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