Ответ:
16a²-x²+2xy-y²
25a²-40ac+16c²-9b²-48bd-64d²
m²-4mn+4n²-4p²+12pq-9q²
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Ответ:
16a²-x²+2xy-y²
25a²-40ac+16c²-9b²-48bd-64d²
m²-4mn+4n²-4p²+12pq-9q²