Mathematics
Mathematics, 24.04.2020 17:14, zoey130

Which expression is equivalent to the expression (-mn2 + 2n2 - 6m2n) + (2mn2 - 2n2 + 3m2n)?
A
mn2 – 3mn
3 mm2 - 40²
3m2n - mn2
mn2 + 4n2 - 9m?n

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Which expression is equivalent to the expression (-mn2 + 2n2 - 6m2n) + (2mn2 - 2n2 + 3m2n)?
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