Ответ:
1)-(a-b)×(a^2+ab+b^2)
2)-(x-1/y)×(x^2+x/y+1/y^2)
3)(a^2+1)(a^4-a^2+1)
4)(xy-1)×(x^2y^2+xy+1)
5)(mn+2)×(m^2n^2-2mn+4)
6)-1/8×(1+2a)×(1-2a+4a^2)
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Ответ:
1)-(a-b)×(a^2+ab+b^2)
2)-(x-1/y)×(x^2+x/y+1/y^2)
3)(a^2+1)(a^4-a^2+1)
4)(xy-1)×(x^2y^2+xy+1)
5)(mn+2)×(m^2n^2-2mn+4)
6)-1/8×(1+2a)×(1-2a+4a^2)