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€ TR£T 6. 8m? +3n* + 1 में से 305 - त* - 4 घटानें पर प्राप्त होगा। _

Answer»

(8m²+3n²+1) -(3m²-n²-4)= (8-3)m² +(3+1)n² +(1+4)= 5m² +4n² + 5

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