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3 (b) 2(m –n )2  – 2m + 2n 

     = 2(m – n)2  – 2(m –n )

    = 2(m – n) (m – n – 2)

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2(m-n)^2 -2(m-n)
=2(m-n)(m-n-1)

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Can you please show steps to get the answer?

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2(m – n) (m – n) – 2(m – n)
= 2(m – n) [(m – n) – 1]
= 2(m – n) (m – n – 1)

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