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Автор - AnimePraph

разложите на множители:
1) 14ху-21х²у^7
2)(х+8)²-5х(х+8)
3)5аb-5b+аb-b

Ответ

Автор - muratiskander43

1)14xy-21x^2y^7

7xy(2-3xy^6)

7xy(2-3xy^6)

2)(x+8)^2-5x(x+8)

(x+8)·(x+8-5x)

(x+8)·(-4x+8)

(x+8)·(-4(x-2))

-4(x+8)·(x-2)

3)5ab-5b+ab-b

b·(5a-5+a-1)

b·(6a-6)

b·6(a-1)

6b·(a-1)

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