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प्रश्न
Find the product of (m2 – n)(5m2n2 – n2)
उत्तर
(m2 – n)(5m2n2 – n2) = m2(5m2n2 – n2) – n(5m2n2 – n2)
= m2(5m2n2) + m2(– n2) – n(5m2n2) + (–) (–) n(n2)
= 5m4n2 – m2n2 – 5m2n3 + n3
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