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19 July, 18:34

Subtract: (3m2 + 2n) - (m2 + 2n)

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Answers (2)
  1. 19 July, 19:02
    0
    The answer should be2m^2
  2. 19 July, 19:47
    0
    The negative in front of the second bracket means that it's times by - 1 so each of their signs switches:

    3m^2+2n-m^2-2n

    Add like terms

    2m^2

    the 2n cancels out
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