Объяснение:
1. (x-y)2
2. (c-3)2
3. (2a-1)2
4. -(b+2)2
5. (c-5d2)2
6. -(3n2-2m)
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Объяснение:
1. (x-y)2
2. (c-3)2
3. (2a-1)2
4. -(b+2)2
5. (c-5d2)2
6. -(3n2-2m)