Math, asked by LoveEva, 6 months ago

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(5mn + 4m)^2 – (5mn - 4m)^2= 80m^2n.

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Answered by mohammedzaid0

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Answer:

3m2 – 7m2n + 5mn2 – n3, m2n + 3mn2 – 3m3 – n3 and 3m3 + 5m2n + mn2 – n3

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