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प्रश्न
Multiply: - 3m2n + 5mn - 4mn2 and 6m2n
बेरीज
उत्तर
Product of - 3m2n + 5mn - 4mn2 and 6m2n
= 6m2n (- 3m2n + 5mn - 4mn2 )
= 6m2n × (- 3m2n) + 6m2n × 5mn + 6m2n × (- 4mn2)
= 18m4n2 + 30m3n2 - 24 m3n3
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