How do you find the sum of #2mn + 4n^2# and #5m^2 - 7mn#?

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Answer 1 · 2015-06-04T17:36:33

Finding the sum implies combining the like terms. The like terms are only 2mn and -7mn, which add upto 5mn. Hence the sum would be #4n^2 +5mn+ 5m^2#