Ответ:
1) (3m+7n)
2) (3x-2)*(5x-13)
3) x2+4x-12
4)-
5) (a-5-4)=(a-5)(a-9)
6) (c+7)(c2+7c+1)
7) (n-1)*(2m-n+1)
Объяснение:
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Ответ:
1) (3m+7n)
2) (3x-2)*(5x-13)
3) x2+4x-12
4)-
5) (a-5-4)=(a-5)(a-9)
6) (c+7)(c2+7c+1)
7) (n-1)*(2m-n+1)
Объяснение: