Ответ:
1. ac-ad+bc-bd
2. xm-xn+ym-yn
3. 1-b+a-ab
4. -am-an-bm-bn
5. 6x^2 + 5xy + 6y^2
6. 0.25a^2-5.29
Объяснение:
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Ответ:
1. ac-ad+bc-bd
2. xm-xn+ym-yn
3. 1-b+a-ab
4. -am-an-bm-bn
5. 6x^2 + 5xy + 6y^2
6. 0.25a^2-5.29
Объяснение: