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guccibamboo

Ответ:

аb⁴-2b⁴-ab+2b=ab(b³-1)-2b(b³-1)=(b³-1)(ab-2b)=b(a-2)(b³-1)=b(a-2)(b-1)(b²+b+1)

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Chlorum1

displaystyle tt ab^4 - 2b^4-ab+2b = bcdot(ab^3-2b^3-a+2) = bcdot (b^3cdot (a-2)-(a-2))=bcdot (a-2)cdot (b^3-1)=bcdot (a-2)cdot (b-1)cdot (b^2+b+1).

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