Предмет: Математика, автор: povorotovaarina6

Разложите на множители -21x^2+42xy-21y^2

Ответы

Автор ответа: muxayyo3087541

Ответ:-21*(x^2-2xy+y^y)= -21*(x-y)^2

Пошаговое объяснение:

Формула КВАДРАТа РАЗНОСТИ ДВУХ ЧИСЕЛ. (x-y)^2=(x^2-2xy+y^2)

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