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Автор - 12Ответчик12

разложите на множители:
xy-xz-y+z
km-k-2m+2ay
3x-3y-2ax+2ay
даю 50 баллов

Ответ

Автор - CVita
xy-xz-y+z=x*(y-z)-y+z=x*(y-z)-1*(y-z)= \ (y-z)(x-1) \  \ km-k-2m+2=k(m-1)-2(m-1)=(m-1)(k-2) \  \ 3x-3y-2ax+2ay=3(x-y)-2a(x-y)=(x-y)(3-2a)

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