Ответ:
1. 9m +2m^2 - 27n - 6nm
2. xy + xn + my + mn
3. xy- x + 8y -8
4. ba- 2b - 3a + 6
5. a + ay- y -y^2
2)
1. 10x - 2x^2 - 15 +3x - 12x + 3x^2
x^2 + x - 15
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Ответ:
1. 9m +2m^2 - 27n - 6nm
2. xy + xn + my + mn
3. xy- x + 8y -8
4. ba- 2b - 3a + 6
5. a + ay- y -y^2
2)
1. 10x - 2x^2 - 15 +3x - 12x + 3x^2
x^2 + x - 15